358:
886:
624:
3437:
1067:
336:
705:
635:
325:
347:
60:
72:
903:
712:
The following table shows how common various erection angles are for a standing male. In the table, zero degrees (0°) is pointing straight up against the abdomen, 90° is horizontal and pointing straight forward, and 180° is pointing straight down to the feet. An upward pointing angle is most common
818:
reasons, most of which are amenable to treatment. Common physiological reasons include diabetes, kidney disease, chronic alcoholism, multiple sclerosis, atherosclerosis, vascular disease, including arterial insufficiency and venogenic erectile dysfunction, and neurologic disease which collectively
688:
Although many erect penises point upwards, it is common and normal for the erect penis to point nearly vertically upwards or horizontally straight forward or even nearly vertically downwards, all depending on the tension of the suspensory ligament that holds it in position. An erect penis can also
519:
and cavernosal sinosoids, forcing blood out of the erectile tissue through erection-related veins which include one deep dorsal vein, a pair of cavernosal veins, and two pairs of para-arterial veins between Buck's fascia and the tunica albuginea. Erection rigidity is mechanically controlled by
668:
The length of the flaccid penis is not indicative of the length of the penis when it becomes erect, with some smaller flaccid penises growing much longer, and some larger flaccid penises growing comparatively less. Generally, the size of an erect penis is fixed throughout
951:. After the male achieves penetration, he will often hold the female tighter and thrust faster, and it is during this time that the male's penis expands, unlike human sexual intercourse, where the male penis commonly becomes erect before entering the female.
653:
if they happen in public or when undesired. Such erections can occur at any time of day, and if clothed may cause a bulge which (if required) can be disguised or hidden by wearing close-fitting underwear, a long shirt, or baggier clothes.
1032:
Clinically, erection is often known as "penile erection", and the state of being erect, and process of erection, are described as "tumescence" or "penile tumescence". The term for the subsiding or cessation of an erection is
539:
can initiate erection in the absence of direct mechanical stimulation (in response to visual, auditory, olfactory, imagined, or tactile stimuli) acting through erectile centers in the lumbar and sacral regions of the
965:, there is little enlargement after erection. The penis is quite rigid when non-erect, and becomes even more rigid during erection. Protrusion is not affected much by erection, but more by relaxation of the
865:
is a painful condition in which the penis does not return to its flaccid state, despite the absence of both physical and psychological stimulation. Priapism lasting over four hours is a medical emergency.
520:
reduction blood flow through theses veins, and thereby building up the pressure of the corpus cavernosum and corpus spongiosum, an integral instructure, the distal ligament, buttresses the glans penis.
713:
and the average erection angle is 74.3 degrees. The penile curvature was measured same time. 63% men have straight penis. 22.2% men have upwards curvature and 14.8% men have downwards curvature.
511:
muscles also compress the veins of the corpora cavernosa, limiting the venous drainage of blood. Erection subsides when parasympathetic stimulation is discontinued; baseline stimulation from the
983:
is housed within the prepuce, 50 centimetres (20 in) long and 2.5 to 6 centimetres (0.98 to 2.36 in) in diameter with the distal end 15 to 20 centimetres (5.9 to 7.9 in). The
1653:
Sadeghipour H, Ghasemi M, Ebrahimi F, Dehpour AR (2007). "Effect of lithium on endothelium-dependent and neurogenic relaxation of rat corpus cavernosum: role of nitric oxide pathway".
3864:
1200:
202:
becomes firm, engorged, and enlarged. Penile erection is the result of a complex interaction of psychological, neural, vascular, and endocrine factors, and is often associated with
689:
take on a number of different shapes, ranging from a straight tube to a tube with a curvature up or down or to the left or right. An increase in penile curvature can be caused by
1051:
terms include 'stiffy', 'hard-on', 'boner' and 'woody'. There are several slang words, euphemisms and synonyms for an erection in
English and in other languages (see also:
987:
contracts to retract the penis into the sheath and relaxes to allow the penis to extend from the sheath. When erect, the penis doubles in length and thickness and the
649:
Spontaneous erections, also known as involuntary, random or unwanted erections, are commonplace and a normal part of male physiology. Socially, such erections can be
357:
4235:
4230:
2762:
1740:"Effect of chronic lithium administration on endothelium-dependent relaxation of rat corpus cavernosum: the role of nitric oxide and cyclooxygenase pathways"
912:
3857:
1549:
Li CY, Kayes O, Kell PD, Christopher N, Minhas S, Ralph DJ (2006). "Penile suspensory ligament division for penile augmentation: indications and results".
1970:
4220:
1814:
877:
is a rare, chronic condition characterized by a flaccid penis that remains in a firm, semi-rigid or semi-erect state in the absence of sexual arousal.
3791:
3474:
544:. The cortex may suppress erection, even in the presence of mechanical stimulation, as may other psychological, emotional, and environmental factors.
3353:
1584:
480:
276:
of the corpora cavernosa restricting the egress and circulation of this blood. Erection subsides when parasympathetic activity reduces to baseline.
238:
291:(NPT), also known as "morning wood". Absence of nocturnal erection is commonly used to distinguish between physical and psychological causes of
4109:
3850:
3407:
2272:
2136:
2102:
2068:
2041:
2009:
1893:
1859:
1505:
1478:
1254:
1148:
158:
104:
1197:
3605:
527:
or cessation of stimulation, erection usually subsides, but the time taken may vary depending on the length and thickness of the penis.
1796:
851:
587:
and is therefore considered taboo or inappropriate for a public setting in many societies. This taboo is lesser than that surrounding
1005:. Most stallions achieve erection within 2 minutes of contact with an estrus mare, and mount the estrus mare 5–10 seconds afterward.
799:
characterized by the inability to develop and/or maintain an erection. The study of erectile dysfunction within medicine is known as
3338:
2537:
1783:
1722:
1692:
1637:
1357:
1337:
1304:
1274:
1229:
4119:
955:
854:
and inability to discuss the matter. Around one in ten men experience recurring impotence problems at some point in their lives.
3390:
1917:
214:, although erections can also be spontaneous. The shape, angle, and direction of an erection vary considerably between humans.
2910:
2554:
2437:
1024:
can reach about the same length as the animal himself when fully erect, but more commonly is about half the bird's length.
885:
3467:
3209:
2872:
2601:
2312:
4094:
3375:
3045:
2900:
2734:
2624:
680:
is 13.12 cm (5.17 inches), while the average circumference of an erect human penis is 11.66 cm (4.59 inches).
919:
2719:
2417:
1185:
559:
553:
288:
1352:
Harris, Robie H. (et al.), It's
Perfectly Normal: Changing Bodies, Growing Up, Sex And Sexual Health. Boston, 1994. (
4301:
3704:
3154:
2706:
2321:
623:
512:
4288:
4079:
2880:
2586:
2564:
153:
99:
35:
4383:
4368:
4296:
3460:
3385:
2958:
2905:
1974:
452:
287:, and is therefore not entirely under conscious control. Erections during sleep or upon waking up are known as
226:
141:
87:
335:
1497:
Making Sense of Sex: A Forthright Guide to
Puberty, Sex and Relationships for People with Asperger's Syndrome
4373:
3725:
3397:
3370:
3224:
1818:
1100:
1052:
1001:
504:
385:
377:
302:
The state of a penis which is partly, but not fully, erect is sometimes known as semi-erection (clinically:
265:
253:
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3766:
3699:
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3441:
3326:
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3023:
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2852:
2126:
1072:
984:
966:
508:
456:
269:
165:
111:
558:
The penis may become erect during sleep or be erect on waking up. Such an erection is medically known as
428:
respectively. This may also become slightly engorged with blood, but less so than the corpora cavernosa.
4342:
4337:
4178:
4007:
3816:
3811:
3796:
3669:
3380:
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2938:
2920:
2822:
2749:
2475:
2470:
874:
704:
599:
690:
634:
431:
In some cases, the scrotum becomes tightened during an erection, and in most uncircumcised males, the
4393:
4332:
3771:
3662:
3348:
3164:
2963:
2654:
2527:
2225:
820:
790:
694:
693:. This may cause physical and psychological effects for the affected individual, which could include
292:
279:
As an autonomic nervous system response, an erection may result from a variety of stimuli, including
3436:
1066:
4182:
4099:
4070:
3496:
3402:
3253:
3236:
3191:
3055:
3018:
3013:
2968:
2694:
2465:
2427:
384:, erections occur much more frequently. An erection occurs when two tubular structures, called the
366:
Side views and comparison of the stages of both uncircumcised and circumcised human penis erection.
606:
to measure sexual orientation. An unusual aversion to the erect penis is sometimes referred to as
4378:
4268:
4058:
4020:
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3831:
3776:
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3248:
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3132:
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2522:
2460:
2422:
2381:
2371:
2208:
2189:
1942:
1394:
1105:
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is not erect, and only able to penetrate the female because it includes a narrow bone called the
796:
397:
280:
218:
1269:
Drake, Richard, Wayne Vogl and Adam
Mitchell, Grey's Anatomy for Students. Philadelphia, 2004. (
1371:
4124:
4089:
4038:
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2005:
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1144:
1138:
1080:
948:
405:
257:
207:
42:
31:
1495:
676:
Though the size of a penis varies considerably between males, the average length of an erect
435:
automatically and gradually retracts throughout the various stages of erection, exposing the
3903:
3826:
3786:
3585:
3363:
3127:
2973:
2928:
2832:
2767:
2568:
2549:
2262:
2233:
2216:
2181:
1934:
1751:
1710:
1662:
1607:
1558:
1386:
1325:
1292:
1048:
980:
663:
595:. Erectile dysfunction is often considered a flaw, eliciting shame in individuals affected.
476:
408:
is a single tubular structure located just below the corpora cavernosa, which contains the
3931:
3885:
3842:
3801:
3635:
3610:
3517:
3483:
2948:
2772:
2689:
2664:
2611:
2591:
2581:
2544:
2325:
1528:
1204:
1115:
536:
448:
222:
962:
2229:
2207:
McCracken, Kevin G.; Wilson, Robert E.; McCracken, Pamela J.; Johnson, Kevin P. (2001).
324:
4388:
4015:
3936:
3750:
3735:
3689:
3657:
3620:
3527:
3122:
2983:
2842:
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2684:
2669:
2619:
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2412:
2351:
1714:
1329:
1296:
1090:
973:
584:
401:
284:
203:
819:
account for about 70% of ED cases. Some drugs used to treat other conditions, such as
346:
4362:
4278:
3973:
3923:
3740:
3694:
3615:
3573:
3548:
3522:
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2511:
2502:
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2402:
2392:
1756:
1739:
1398:
1040:
835:
815:
811:
650:
583:
Though an erection can have many causes, it is most commonly seen as an indicator of
516:
484:
468:
460:
245:
1448:
After
Prostate Cancer: A What-Comes-Next Guide to a Safe and Informed recovery: p.48
1034:
4151:
4134:
4065:
4025:
3941:
3913:
3898:
3563:
3541:
3507:
3302:
3241:
3231:
3201:
3117:
3112:
3040:
2857:
2649:
2356:
2298:
1632:
Milsten, Richard (et al.), The Sexual Male. Problems And
Solutions. London, 2000. (
1412:
1013:
940:
607:
492:
472:
389:
373:
249:
234:
230:
59:
306:); a penis which is not erect is typically referred to as being flaccid, or soft.
2092:
1998:
1883:
1849:
1562:
146:
92:
4327:
4322:
4053:
3806:
3645:
3536:
3331:
3263:
3219:
3184:
3174:
3075:
2812:
2507:
2485:
2385:
1687:
Williams, Warwick, It's Up To You: Overcoming
Erection Problems. London, 1989. (
1095:
988:
839:
677:
541:
524:
436:
425:
17:
3452:
1666:
30:
This article is about penile erection. For the similar arousal in females, see
4347:
4317:
4210:
4171:
4166:
4146:
3873:
3781:
3553:
3512:
3297:
3280:
3092:
2797:
2714:
2333:
1611:
1062:
1009:
996:
824:
698:
588:
467:
supplying the erectile tissue; upon stimulation, these nerve branches release
393:
195:
71:
2290:
217:
Physiologically, an erection is required for a male to effect penetration or
27:
Physiological phenomenon involving the hardening and enlargement of the penis
4273:
4263:
4240:
4187:
4084:
4074:
3985:
3958:
3946:
3908:
3720:
3640:
3595:
3419:
3169:
3159:
3107:
3085:
3070:
3008:
3003:
2802:
2782:
2644:
2480:
2407:
2057:
Juan C. Samper, Ph.D.; Jonathan F. Pycock, Ph.D.; Angus O. McKinnon (2007).
1436:
1085:
1021:
800:
421:
296:
2247:
1765:
1674:
1570:
1619:
4205:
4161:
4156:
3990:
3978:
3963:
3893:
3674:
3630:
3600:
3590:
3558:
3487:
3290:
3258:
3179:
3137:
3080:
3060:
2933:
2787:
2777:
2517:
2497:
2361:
1971:"The Stallion: Breeding Soundness Examination & Reproductive Anatomy"
1110:
890:
862:
831:
464:
432:
76:
Three columns of erectile tissue make up most of the volume of the penis.
842:, can have devastating psychological consequences including feelings of
697:
or pain during an erection. Treatments include oral medication (such as
447:
In the presence of mechanical stimulation, erection is initiated by the
4245:
4141:
3414:
3285:
3214:
3097:
3033:
2988:
2978:
2792:
2754:
2490:
2338:
2193:
2172:
1946:
1390:
1016:, being an erectile expansion of the cloacal wall and being erected by
944:
804:
670:
409:
381:
171:
117:
4255:
4045:
3995:
3968:
3149:
2634:
2455:
2376:
2366:
2238:
592:
241:
211:
2185:
1938:
1738:
Sadeghipour H, Ghasemi M, Nobakht M, Ebrahimi F, Dehpour AR (2007).
954:
An elephant's penis is S-shaped when fully erect and has a Y-shaped
1778:
Tanagho, Emil A. (et al.), Smith's
General Urology. London, 2000. (
1585:"Is Your Penis Normal? There's a Chart for That - RealClearScience"
830:
Erectile dysfunction, tied closely as it is to cultural notions of
795:
Erectile dysfunction (also known as ED or "(male) impotence") is a
701:) or surgery, which is most often performed only as a last resort.
439:, though some individuals have to manually retract their foreskin.
3951:
3358:
1044:
1017:
995:. Erection and protrusion take place gradually, by the increasing
884:
847:
843:
603:
602:, which measures erections, has been used by some governments and
417:
413:
261:
199:
1598:
Sparling J (1997). "Penile erections: shape, angle, and length".
1047:, erection is known by many informal terms. Commonly encountered
3625:
2998:
2943:
2659:
273:
3846:
3456:
2294:
4197:
896:
1882:
James R. Gillespie; Frank Bennie
Flanders (28 January 2009).
2209:"Sexual selection: Are ducks impressed by drakes' display?"
1457:
Listen To Your
Hormones, Abraham Harvey Kryger - 2004. p.32
1140:
What's Happening to My Body? Book for Boys: Revised Edition
515:
of the autonomic nervous system causes constriction of the
1287:
Hsu, Geng-Long; Liu, Shih-Ping (2018). "Penis Structure".
922:
any relevant information into other sections or articles.
388:, that run the length of the penis, become engorged with
380:, and is common for children and infants. After reaching
1198:
APDVS > 31. Anatomy and Physiology of Normal Erection
1470:
Sexuality Now: Embracing Diversity: Embracing Diversity
2094:
Equine Breeding Management and Artificial Insemination
1817:. Arbl.cvmbs.colostate.edu. 2002-09-14. Archived from
1173:
Worlds Apart: Recent Chinese Writing and Its Audiences
1851:
Functional Anatomy and Physiology of Domestic Animals
976:'s penis reaches to between his forelegs when erect.
1965:
1963:
4310:
4287:
4254:
4219:
4196:
4108:
4006:
3922:
3884:
3759:
3713:
3494:
3311:
3200:
2919:
2871:
2748:
2705:
2610:
2563:
2436:
2332:
2161:"The 20-cm Spiny Penis of the Argentine Lake Duck (
152:
140:
135:
130:
98:
86:
81:
52:
1997:
1249:. Lippincott Williams & Wilkins. p. 265.
1973:. University of Wisconsin-Madison. Archived from
1705:Hsu, Geng-Long (2018). "Erection Abnormality".
1648:
1646:
961:Given the small amount of erectile tissue in a
1413:"How to stop an unwanted erection: 7 remedies"
3858:
3468:
2306:
1132:
1130:
8:
673:life. Its size may be increased by surgery.
1500:. Jessica Kingsley Publishers. p. 62.
708:Various erection angle and shape of penises
459:. Parasympathetic branches extend from the
376:as well as for the harvesting of sperm for
3865:
3851:
3843:
3475:
3461:
3453:
2313:
2299:
2291:
1372:"Voluntary enhancement of penile erection"
969:and straightening of the sigmoid flexure.
3792:Sexual and reproductive health and rights
2237:
2063:. Elsevier Health Sciences. p. 176.
1885:Modern Livestock & Poultry Production
1755:
1247:Essential Clinical Anatomy, Third Edition
495:agent. The arteries dilate, filling the
256:of the penis (and to a lesser extent the
1370:Rubin, H. B.; Henson, Donald E. (1975).
1215:
1213:
715:
703:
2267:. HarperCollins Publishers. p. 6.
2261:Gabrielle Morrissey (27 January 2005).
1996:James Warren Evans (15 February 1990).
1126:
999:of the erectile vascular tissue in the
483:arteries. Nitric oxide diffuses to the
64:Erection of an uncircumcised male human
2060:Current Therapy in Equine Reproduction
1320:Hsu, Geng-Long; Lu, Hsiu-Chen (2018).
810:Erectile dysfunction may occur due to
471:, which in turn causes the release of
392:. This may result from any of various
169:
127:
115:
49:
4236:Hypothalamic–pituitary–prolactin axis
1467:Janell L. Carroll (29 January 2009).
7:
1709:. Academic Press. pp. 382–390.
1600:Journal of Sex & Marital Therapy
1324:. Academic Press. pp. 367–375.
1291:. Academic Press. pp. 357–366.
1186:wiley.com > Viagra function image
4231:Hypothalamic–pituitary–gonadal axis
3606:Friends with benefits relationships
1916:Köhncke, M.; Leonhardt, K. (1986).
1529:"Penis Size FAQ & Bibliography"
1379:Bulletin of the Psychonomic Society
1797:"Erectile dysfunction (impotence)"
1715:10.1016/B978-0-12-801238-3.64374-X
1330:10.1016/B978-0-12-801238-3.64603-2
1297:10.1016/B978-0-12-801238-3.64602-0
1224:. Benjamin-Cummings. p. 895.
827:, may cause erectile dysfunction.
25:
1848:William O. Reece (4 March 2009).
1473:. Cengage Learning. p. 149.
913:list of miscellaneous information
850:or inadequacy. There is a strong
643:Erection visible beneath clothing
591:but higher than that surrounding
531:Voluntary and involuntary control
3435:
2125:Frank B. Gill (6 October 2006).
1757:10.1111/j.1464-410X.2006.06530.x
1245:Moore, Keith; Anne Agur (2007).
1143:. Newmarket Press. p. 119.
1065:
939:At the time of penetration, the
901:
633:
622:
356:
345:
334:
323:
70:
58:
3391:LGBT-affirming religious groups
2264:Urge: Hot Secrets For Great Sex
1020:, not blood. The penis of the
1012:is different in structure from
614:Spontaneous or random erections
2555:Sexually transmitted infection
2036:. Discovery Publishing House.
717:Occurrence of erection angles
1:
2602:Women who have sex with women
1494:Sarah Attwood (15 May 2008).
1137:Lynda Madaras (8 June 2007).
372:An erection is necessary for
2735:History of erotic depictions
2625:Criminal transmission of HIV
2159:McCracken, Kevin G. (2000).
2131:. Macmillan. pp. 414–.
2097:. Elsevier Health Sciences.
1815:"Semen Collection from Dogs"
1707:Encyclopedia of Reproduction
1563:10.1016/j.eururo.2006.01.020
1289:Encyclopedia of Reproduction
455:with minimal input from the
2720:Counterculture of the 1960s
2034:Sexual Behaviour In Animals
560:nocturnal penile tumescence
554:Nocturnal penile tumescence
289:nocturnal penile tumescence
248:of the penis. The arteries
4410:
4221:Reproductive endocrinology
3442:Human sexuality portal
1667:10.1016/j.niox.2006.05.004
1439:retrieved 28 February 2012
1437:Morning Erections: Sizemed
1207:Retrieved on Mars 11, 2010
1188:Retrieved on Mars 11, 2010
1171:Goldblatt, Howard (1990).
788:
661:
551:
40:
29:
4289:Human reproductive system
3430:
2587:Men who have sex with men
1854:. John Wiley & Sons.
1612:10.1080/00926239708403924
164:
110:
69:
57:
36:Erection (disambiguation)
1531:. Kinsey Institute. 2009
1322:Penis Structure-Erection
1222:Anatomy & physiology
910:This section contains a
489:trabecular smooth muscle
487:of the arteries (called
453:autonomic nervous system
229:, causing the levels of
227:autonomic nervous system
221:and is triggered by the
198:phenomenon in which the
41:Not to be confused with
3726:Physical attractiveness
2091:Juan C. Samper (2009).
1220:Marieb, Elaine (2013).
1101:Issues in social nudity
1002:corpus cavernosum penis
396:stimuli, also known as
378:artificial insemination
4311:Diseases and disorders
4120:Sexual differentiation
3767:Human female sexuality
3700:Split attraction model
3581:Committed relationship
2863:Split attraction model
2853:Sexual objectification
2763:Anarchism and love/sex
1073:Human sexuality portal
967:retractor penis muscle
894:
725:Percent of population
709:
457:central nervous system
166:Anatomical terminology
131:Erection blood vessels
112:Anatomical terminology
34:. For other uses, see
4343:Premature ejaculation
4338:Hard flaccid syndrome
4008:Human sexual activity
3817:Sex-positive movement
3812:Sex-positive feminism
3797:Sex Addicts Anonymous
3670:Queer heterosexuality
2823:Sex-positive movement
2476:Reproductive medicine
2471:Obesity and sexuality
2418:Sexual response cycle
888:
875:Hard flaccid syndrome
870:Hard flaccid syndrome
803:, a sub-field within
707:
600:penile plethysmograph
272:muscles compress the
264:; simultaneously the
4333:Erectile dysfunction
3772:Human male sexuality
3663:Romantic orientation
3349:Buddhist monasticism
3339:Christian demonology
3165:Urethral intercourse
2964:Erotic sexual denial
2655:Cybersex trafficking
2528:Erectile dysfunction
1888:. Cengage Learning.
1053:The WikiSaurus entry
947:, a feature of most
791:Erectile dysfunction
785:Erectile dysfunction
695:erectile dysfunction
574:Socio-sexual aspects
513:sympathetic division
374:natural insemination
293:erectile dysfunction
4112:reproductive system
4100:Vaginal lubrication
3878:sexual reproduction
3549:Casual relationship
3497:Sexual relationship
3403:Sacred prostitution
3192:Wet T-shirt contest
3056:Non-penetrative sex
3014:Mammary intercourse
2695:Revenge pornography
2466:Masters and Johnson
2428:Vaginal lubrication
2230:2001Natur.413..128M
2032:Sarkar, A. (2003).
893:with an erect penis
718:
4110:Development of the
4021:Sexual intercourse
3832:Stanley v. Georgia
3777:Right to sexuality
3746:Sexual frustration
3685:Sexual orientation
3249:Red-light district
3145:Sexual penetration
3133:Sexual intercourse
3051:Nipple stimulation
2730:Golden Age of Porn
2630:Child sexual abuse
2597:Sexual orientation
2523:Sexual dysfunction
2461:Male contraceptive
2423:Sexual stimulation
2372:Nocturnal emission
1920:Cryptoprocta ferox
1417:Medical News Today
1391:10.3758/BF03333178
1203:2010-07-14 at the
1106:Nipple stimulation
991:increases by 3 to
979:When not erect, a
895:
852:culture of silence
797:sexual dysfunction
780:Medical conditions
716:
710:
691:Peyronie's disease
548:Nocturnal erection
398:sexual stimulation
304:partial tumescence
281:sexual stimulation
219:sexual intercourse
4356:
4355:
4125:Sexual dimorphism
4090:Postpartum period
3840:
3839:
3822:Sexual revolution
3731:Sexual attraction
3680:Sexual abstinence
3569:Celibacy syndrome
3450:
3449:
3359:Hindu monasticism
3344:Clerical celibacy
3210:Adult video games
2921:Sexual activities
2838:Sexual attraction
2828:Sexual abstinence
2740:Sexual revolution
2725:Feminist sex wars
2680:Sexual misconduct
2675:Sexual harassment
2640:Indecent exposure
2347:Clitoral erection
2274:978-0-7304-4527-2
2138:978-0-7167-4983-7
2104:978-1-4160-5234-0
2070:978-0-7216-0252-3
2043:978-81-7141-746-9
2011:978-0-7167-1811-6
2004:. W. H. Freeman.
1930:Mammalian Species
1895:978-1-4283-1808-3
1861:978-0-8138-1451-3
1507:978-1-84642-797-8
1480:978-0-495-60274-3
1256:978-0-7817-6274-8
1150:978-1-55704-769-4
1081:Clitoral erection
949:placental mammals
937:
936:
777:
776:
503:with blood. The
501:corpora cavernosa
497:corpus spongiosum
477:endothelial cells
443:Autonomic control
406:corpus spongiosum
386:corpora cavernosa
258:corpus spongiosum
254:corpora cavernosa
237:) to rise in the
208:sexual attraction
192:penile tumescence
180:
179:
175:
126:
125:
121:
43:penis enlargement
32:clitoral erection
16:(Redirected from
4401:
4095:Mechanics of sex
3904:Follicular phase
3874:Human physiology
3867:
3860:
3853:
3844:
3827:Sexual surrogate
3787:Sexual addiction
3586:Conventional sex
3477:
3470:
3463:
3454:
3440:
3439:
3364:Jain monasticism
3128:Sexual fetishism
3046:Mechanics of sex
2929:Conventional sex
2833:Sexual addiction
2768:Extramarital sex
2550:Sexual surrogate
2386:male ejaculation
2315:
2308:
2301:
2292:
2286:
2285:
2283:
2281:
2258:
2252:
2251:
2241:
2239:10.1038/35093160
2213:
2204:
2198:
2197:
2169:
2156:
2150:
2149:
2147:
2145:
2122:
2116:
2115:
2113:
2111:
2088:
2082:
2081:
2079:
2077:
2054:
2048:
2047:
2029:
2023:
2022:
2020:
2018:
2003:
1993:
1987:
1986:
1984:
1982:
1967:
1958:
1957:
1955:
1953:
1926:
1913:
1907:
1906:
1904:
1902:
1879:
1873:
1872:
1870:
1868:
1845:
1839:
1838:Shoshani, p. 80.
1836:
1830:
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1827:
1826:
1811:
1805:
1804:
1793:
1787:
1776:
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1177:
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1168:
1162:
1161:
1159:
1157:
1134:
1075:
1070:
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994:
985:retractor muscle
932:
929:
923:
905:
904:
897:
719:
664:Human penis size
637:
626:
505:ischiocavernosus
451:division of the
412:, through which
360:
349:
338:
327:
266:ischiocavernosus
225:division of the
172:edit on Wikidata
159:E1.0.0.0.0.0.8
128:
118:edit on Wikidata
105:E1.0.0.0.0.0.8
74:
62:
50:
21:
18:Erectile potency
4409:
4408:
4404:
4403:
4402:
4400:
4399:
4398:
4369:Penile erection
4359:
4358:
4357:
4352:
4306:
4283:
4250:
4223:and infertility
4222:
4215:
4192:
4111:
4104:
4002:
3932:Spermatogenesis
3918:
3886:Menstrual cycle
3880:
3871:
3841:
3836:
3802:Sexual jealousy
3755:
3714:Sexual dynamics
3709:
3636:One-night stand
3611:Heterosexuality
3518:Gray asexuality
3501:
3499:
3490:
3484:Human sexuality
3481:
3451:
3446:
3434:
3426:
3354:Catholic Church
3314:
3307:
3196:
2915:
2867:
2773:Family planning
2752:
2744:
2701:
2690:Sexual violence
2665:Sex trafficking
2606:
2592:Sexual identity
2582:Gender identity
2559:
2545:Sexual medicine
2441:
2432:
2398:Penile erection
2352:Erogenous zones
2336:
2328:
2326:human sexuality
2319:
2289:
2279:
2277:
2275:
2260:
2259:
2255:
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2206:
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2201:
2186:10.2307/4089612
2167:
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2141:
2139:
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2109:
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2075:
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2056:
2055:
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2044:
2031:
2030:
2026:
2016:
2014:
2012:
1995:
1994:
1990:
1980:
1978:
1969:
1968:
1961:
1951:
1949:
1939:10.2307/3503919
1924:
1915:
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1205:Wayback Machine
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1116:Sexual function
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640:
639:
638:
629:
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627:
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576:
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550:
537:cerebral cortex
533:
517:penile arteries
509:bulbospongiosus
491:), acting as a
449:parasympathetic
445:
370:
369:
368:
367:
363:
362:
361:
352:
351:
350:
341:
340:
339:
330:
329:
328:
319:
318:
317:Erection stages
312:
270:bulbospongiosus
260:) to fill with
223:parasympathetic
188:penile erection
176:
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15:
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4376:
4374:Sexual arousal
4371:
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4016:Sexual arousal
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3939:
3937:spermatogonium
3928:
3926:
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3789:
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3779:
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3769:
3763:
3761:
3757:
3756:
3754:
3753:
3751:Sociosexuality
3748:
3743:
3738:
3736:Sexual capital
3733:
3728:
3723:
3717:
3715:
3711:
3710:
3708:
3707:
3702:
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3692:
3690:Sexual partner
3687:
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3667:
3666:
3665:
3655:
3654:
3653:
3643:
3638:
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3623:
3621:Hypersexuality
3618:
3613:
3608:
3603:
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3583:
3578:
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3528:Fictosexuality
3525:
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3424:
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3410:
3408:Ancient Greece
3400:
3395:
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3393:
3383:
3378:
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3309:
3308:
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3283:
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3182:
3172:
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3152:
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3141:
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3123:Sexual fantasy
3120:
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3100:
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3083:
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3073:
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3037:
3036:
3031:
3026:
3024:Anal fingering
3016:
3011:
3006:
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2996:
2991:
2986:
2984:Foot fetishism
2981:
2976:
2971:
2966:
2961:
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2946:
2941:
2936:
2931:
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2923:
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2888:
2883:
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2868:
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2865:
2860:
2855:
2850:
2845:
2843:Sexual capital
2840:
2835:
2830:
2825:
2820:
2815:
2810:
2808:Premarital sex
2805:
2800:
2795:
2790:
2785:
2780:
2775:
2770:
2765:
2759:
2757:
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2732:
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2687:
2685:Sexual slavery
2682:
2677:
2672:
2670:Sexual assault
2667:
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2657:
2647:
2642:
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2627:
2622:
2620:Age of consent
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2533:Hypersexuality
2530:
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2431:
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2413:Sexual arousal
2410:
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2180:(3): 820–825.
2163:Oxyura vittata
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2083:
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2024:
2010:
1988:
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1860:
1840:
1831:
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1750:(1): 177–182.
1730:
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1642:
1625:
1606:(3): 195–207.
1590:
1576:
1557:(4): 729–733.
1541:
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1486:
1479:
1459:
1450:
1441:
1429:
1404:
1385:(2): 158–160.
1362:
1345:
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1255:
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1118:
1113:
1108:
1103:
1098:
1093:
1091:Death erection
1088:
1083:
1077:
1076:
1060:
1057:
1029:
1026:
1014:mammal penises
935:
934:
909:
907:
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879:
871:
868:
859:
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789:Main article:
786:
783:
781:
778:
775:
774:
771:
767:
766:
763:
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750:
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662:Main article:
659:
656:
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630:
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620:
619:
618:
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585:sexual arousal
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552:Main article:
549:
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402:sexual arousal
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204:sexual arousal
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4279:Breastfeeding
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4232:
4229:
4228:
4226:
4224:
4218:
4212:
4209:
4207:
4204:
4203:
4201:
4199:
4195:
4189:
4186:
4184:
4180:
4177:
4173:
4170:
4168:
4165:
4163:
4160:
4158:
4155:
4153:
4150:
4148:
4145:
4144:
4143:
4140:
4136:
4133:
4131:
4128:
4126:
4123:
4122:
4121:
4118:
4117:
4115:
4113:
4107:
4101:
4098:
4096:
4093:
4091:
4088:
4086:
4083:
4081:
4078:
4076:
4072:
4071:Fertilization
4069:
4067:
4064:
4060:
4057:
4055:
4052:
4051:
4049:
4047:
4044:
4040:
4037:
4035:
4032:
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4027:
4024:
4022:
4019:
4017:
4014:
4013:
4011:
4009:
4005:
3997:
3994:
3992:
3989:
3988:
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3977:
3975:
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3957:
3953:
3950:
3948:
3945:
3943:
3940:
3938:
3935:
3934:
3933:
3930:
3929:
3927:
3925:
3924:Gametogenesis
3921:
3915:
3912:
3910:
3907:
3905:
3902:
3900:
3897:
3895:
3892:
3891:
3889:
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3879:
3875:
3868:
3863:
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3845:
3833:
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3825:
3823:
3820:
3818:
3815:
3813:
3810:
3808:
3805:
3803:
3800:
3798:
3795:
3793:
3790:
3788:
3785:
3783:
3780:
3778:
3775:
3773:
3770:
3768:
3765:
3764:
3762:
3758:
3752:
3749:
3747:
3744:
3742:
3741:Sexual ethics
3739:
3737:
3734:
3732:
3729:
3727:
3724:
3722:
3719:
3718:
3716:
3712:
3706:
3703:
3701:
3698:
3696:
3695:Single person
3693:
3691:
3688:
3686:
3683:
3681:
3678:
3676:
3673:
3671:
3668:
3664:
3661:
3660:
3659:
3658:Romantic love
3656:
3652:
3649:
3648:
3647:
3644:
3642:
3639:
3637:
3634:
3632:
3629:
3627:
3624:
3622:
3619:
3617:
3616:Homosexuality
3614:
3612:
3609:
3607:
3604:
3602:
3599:
3597:
3594:
3592:
3589:
3587:
3584:
3582:
3579:
3575:
3574:Herbivore men
3572:
3570:
3567:
3565:
3562:
3561:
3560:
3557:
3555:
3552:
3550:
3547:
3543:
3540:
3539:
3538:
3535:
3529:
3526:
3524:
3523:Demisexuality
3521:
3520:
3519:
3516:
3515:
3514:
3511:
3509:
3506:
3505:
3503:
3498:
3493:
3489:
3485:
3478:
3473:
3471:
3466:
3464:
3459:
3458:
3455:
3443:
3438:
3433:
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3429:
3421:
3418:
3417:
3416:
3413:
3409:
3406:
3405:
3404:
3401:
3399:
3396:
3392:
3389:
3388:
3387:
3384:
3382:
3379:
3377:
3374:
3372:
3369:
3365:
3362:
3360:
3357:
3355:
3352:
3350:
3347:
3346:
3345:
3342:
3340:
3337:
3333:
3330:
3329:
3328:
3324:
3321:
3320:
3318:
3316:
3310:
3304:
3301:
3299:
3296:
3292:
3289:
3288:
3287:
3284:
3282:
3279:
3275:
3272:
3270:
3267:
3266:
3265:
3262:
3260:
3257:
3255:
3252:
3250:
3247:
3243:
3240:
3238:
3235:
3234:
3233:
3230:
3226:
3223:
3222:
3221:
3218:
3216:
3213:
3211:
3208:
3207:
3205:
3203:
3199:
3193:
3190:
3186:
3183:
3181:
3178:
3177:
3176:
3173:
3171:
3168:
3166:
3163:
3161:
3158:
3156:
3153:
3151:
3148:
3146:
3143:
3139:
3136:
3135:
3134:
3131:
3129:
3126:
3124:
3121:
3119:
3118:Sex positions
3116:
3114:
3111:
3109:
3106:
3104:
3101:
3099:
3096:
3094:
3091:
3087:
3084:
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3074:
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3064:
3063:
3062:
3059:
3057:
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3052:
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3047:
3044:
3042:
3039:
3035:
3032:
3030:
3027:
3025:
3022:
3021:
3020:
3017:
3015:
3012:
3010:
3007:
3005:
3002:
3000:
2997:
2995:
2994:Forced orgasm
2992:
2990:
2987:
2985:
2982:
2980:
2977:
2975:
2972:
2970:
2967:
2965:
2962:
2960:
2957:
2955:
2952:
2950:
2947:
2945:
2942:
2940:
2937:
2935:
2932:
2930:
2927:
2926:
2924:
2922:
2918:
2912:
2911:United States
2909:
2907:
2904:
2902:
2899:
2897:
2894:
2892:
2889:
2887:
2884:
2882:
2879:
2878:
2876:
2874:
2870:
2864:
2861:
2859:
2856:
2854:
2851:
2849:
2848:Sexual ethics
2846:
2844:
2841:
2839:
2836:
2834:
2831:
2829:
2826:
2824:
2821:
2819:
2816:
2814:
2811:
2809:
2806:
2804:
2801:
2799:
2796:
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2791:
2789:
2786:
2784:
2781:
2779:
2776:
2774:
2771:
2769:
2766:
2764:
2761:
2760:
2758:
2756:
2751:
2750:Relationships
2747:
2741:
2738:
2736:
2733:
2731:
2728:
2726:
2723:
2721:
2718:
2716:
2713:
2712:
2710:
2708:
2704:
2696:
2693:
2691:
2688:
2686:
2683:
2681:
2678:
2676:
2673:
2671:
2668:
2666:
2663:
2661:
2658:
2656:
2653:
2652:
2651:
2648:
2646:
2643:
2641:
2638:
2636:
2633:
2631:
2628:
2626:
2623:
2621:
2618:
2617:
2615:
2613:
2609:
2603:
2600:
2598:
2595:
2593:
2590:
2588:
2585:
2583:
2580:
2578:
2577:Gender binary
2575:
2574:
2572:
2570:
2566:
2562:
2556:
2553:
2551:
2548:
2546:
2543:
2539:
2538:Hyposexuality
2536:
2534:
2531:
2529:
2526:
2525:
2524:
2521:
2519:
2516:
2513:
2512:PLISSIT model
2509:
2506:
2504:
2503:Sex education
2501:
2499:
2496:
2492:
2489:
2487:
2484:
2482:
2479:
2478:
2477:
2474:
2472:
2469:
2467:
2464:
2462:
2459:
2457:
2454:
2452:
2451:Birth control
2449:
2448:
2446:
2444:
2439:
2435:
2429:
2426:
2424:
2421:
2419:
2416:
2414:
2411:
2409:
2406:
2404:
2403:Pre-ejaculate
2401:
2399:
2396:
2394:
2393:Pelvic thrust
2391:
2387:
2383:
2380:
2379:
2378:
2375:
2373:
2370:
2368:
2365:
2363:
2360:
2358:
2355:
2353:
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2348:
2345:
2344:
2342:
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2335:
2331:
2327:
2323:
2316:
2311:
2309:
2304:
2302:
2297:
2296:
2293:
2276:
2270:
2266:
2265:
2257:
2254:
2249:
2245:
2240:
2235:
2231:
2227:
2224:(6852): 128.
2223:
2219:
2218:
2210:
2203:
2200:
2195:
2191:
2187:
2183:
2179:
2175:
2174:
2166:
2164:
2155:
2152:
2140:
2134:
2130:
2129:
2121:
2118:
2106:
2100:
2096:
2095:
2087:
2084:
2072:
2066:
2062:
2061:
2053:
2050:
2045:
2039:
2035:
2028:
2025:
2013:
2007:
2002:
2001:
1992:
1989:
1977:on 2007-07-16
1976:
1972:
1966:
1964:
1960:
1948:
1944:
1940:
1936:
1932:
1931:
1923:
1921:
1912:
1909:
1897:
1891:
1887:
1886:
1878:
1875:
1863:
1857:
1853:
1852:
1844:
1841:
1835:
1832:
1821:on 2012-02-05
1820:
1816:
1810:
1807:
1803:. 2017-11-13.
1802:
1798:
1792:
1789:
1785:
1784:0-8385-8607-4
1781:
1775:
1772:
1767:
1763:
1758:
1753:
1749:
1745:
1741:
1734:
1731:
1726:
1724:9780128151457
1720:
1716:
1712:
1708:
1701:
1698:
1694:
1693:0-7225-1915-X
1690:
1684:
1681:
1676:
1672:
1668:
1664:
1660:
1656:
1649:
1647:
1643:
1639:
1638:0-393-32127-4
1635:
1629:
1626:
1621:
1617:
1613:
1609:
1605:
1601:
1594:
1591:
1586:
1580:
1577:
1572:
1568:
1564:
1560:
1556:
1552:
1545:
1542:
1530:
1524:
1521:
1509:
1503:
1499:
1498:
1490:
1487:
1482:
1476:
1472:
1471:
1463:
1460:
1454:
1451:
1445:
1442:
1438:
1433:
1430:
1418:
1414:
1408:
1405:
1400:
1396:
1392:
1388:
1384:
1380:
1373:
1366:
1363:
1359:
1358:1-56402-199-8
1355:
1349:
1346:
1341:
1339:9780128151457
1335:
1331:
1327:
1323:
1316:
1313:
1308:
1306:9780128151457
1302:
1298:
1294:
1290:
1283:
1280:
1276:
1275:0-443-06612-4
1272:
1266:
1263:
1258:
1252:
1248:
1241:
1238:
1233:
1231:9780321887603
1227:
1223:
1216:
1214:
1210:
1206:
1202:
1199:
1194:
1191:
1187:
1182:
1179:
1175:. p. 56.
1174:
1167:
1164:
1152:
1146:
1142:
1141:
1133:
1131:
1127:
1121:
1117:
1114:
1112:
1109:
1107:
1104:
1102:
1099:
1097:
1094:
1092:
1089:
1087:
1084:
1082:
1079:
1078:
1074:
1068:
1063:
1058:
1056:
1054:
1050:
1046:
1042:
1038:
1036:
1027:
1025:
1023:
1019:
1015:
1011:
1006:
1004:
1003:
998:
990:
986:
982:
981:horse's penis
977:
975:
970:
968:
964:
959:
957:
952:
950:
946:
942:
931:
921:
916:
914:
908:
899:
898:
892:
887:
881:Other animals
880:
878:
876:
869:
867:
864:
857:
855:
853:
849:
845:
841:
837:
833:
828:
826:
822:
817:
816:psychological
813:
812:physiological
808:
806:
802:
798:
792:
784:
779:
772:
769:
768:
764:
761:
760:
756:
753:
752:
748:
745:
744:
740:
737:
736:
732:
729:
728:
724:
721:
720:
714:
706:
702:
700:
696:
692:
683:
681:
679:
674:
672:
665:
657:
655:
652:
636:
625:
613:
611:
609:
605:
604:courts of law
601:
596:
594:
590:
586:
578:
573:
571:
569:
568:morning glory
565:
562:(informally:
561:
555:
547:
545:
543:
538:
530:
528:
526:
521:
518:
514:
510:
506:
502:
498:
494:
490:
486:
485:smooth muscle
482:
478:
474:
470:
469:acetylcholine
466:
462:
461:sacral plexus
458:
454:
450:
442:
440:
438:
434:
429:
427:
423:
419:
415:
411:
407:
403:
399:
395:
394:physiological
391:
387:
383:
379:
375:
359:
348:
337:
326:
309:
307:
305:
300:
298:
294:
290:
286:
282:
277:
275:
271:
267:
263:
259:
255:
251:
247:
246:smooth muscle
243:
240:
236:
232:
228:
224:
220:
215:
213:
209:
205:
201:
197:
196:physiological
193:
189:
186:(clinically:
185:
173:
167:
163:
160:
157:
155:
151:
148:
145:
143:
139:
134:
129:
119:
113:
109:
106:
103:
101:
97:
94:
91:
89:
85:
80:
73:
68:
61:
56:
51:
48:
44:
37:
33:
19:
4384:Men's health
4183:Paternal age
4179:Maternal age
4152:Tanner scale
4135:Virilization
4130:Feminization
4080:Implantation
4066:Insemination
4050:Ejaculation
4033:
4026:Masturbation
3942:spermatocyte
3914:Luteal phase
3899:Menstruation
3564:Love shyness
3542:Pansexuality
3508:Aromanticism
3313:Religion and
3303:Webcam model
3242:Survival sex
3232:Prostitution
3202:Sex industry
3113:Sex in space
3041:Masturbation
2881:Ancient Rome
2858:Sexual slang
2650:Sexual abuse
2397:
2357:Insemination
2278:. Retrieved
2263:
2256:
2221:
2215:
2202:
2177:
2171:
2162:
2154:
2142:. Retrieved
2127:
2120:
2108:. Retrieved
2093:
2086:
2074:. Retrieved
2059:
2052:
2033:
2027:
2015:. Retrieved
1999:
1991:
1979:. Retrieved
1975:the original
1950:. Retrieved
1933:(254): 1–5.
1928:
1919:
1911:
1899:. Retrieved
1884:
1877:
1865:. Retrieved
1850:
1843:
1834:
1823:. Retrieved
1819:the original
1809:
1800:
1791:
1774:
1747:
1743:
1733:
1706:
1700:
1683:
1661:(1): 54–63.
1658:
1655:Nitric Oxide
1654:
1628:
1603:
1599:
1593:
1579:
1554:
1550:
1544:
1533:. Retrieved
1523:
1511:. Retrieved
1496:
1489:
1469:
1462:
1453:
1444:
1432:
1421:. Retrieved
1419:. 2018-01-04
1416:
1407:
1382:
1378:
1365:
1348:
1321:
1315:
1288:
1282:
1265:
1246:
1240:
1221:
1193:
1181:
1172:
1166:
1154:. Retrieved
1139:
1041:Colloquially
1039:
1035:detumescence
1031:
1007:
1000:
978:
971:
963:bull's penis
960:
953:
941:canine penis
938:
925:
911:
873:
861:
829:
809:
794:
711:
687:
675:
667:
651:embarrassing
648:
608:phallophobia
597:
582:
567:
564:morning wood
563:
557:
534:
522:
500:
496:
493:vasodilating
488:
473:nitric oxide
446:
430:
420:pass during
390:venous blood
371:
303:
301:
278:
252:causing the
231:nitric oxide
216:
191:
187:
183:
181:
47:
4394:Human penis
4328:Dyspareunia
4323:Dysorgasmia
4269:Development
3807:Sexual norm
3646:Promiscuity
3537:Bisexuality
3386:LGBT people
3332:Tantric sex
3264:Sex tourism
3220:Pornography
3185:Erotic talk
3175:Virtual sex
3076:Cunnilingus
2906:South Korea
2901:Philippines
2813:Promiscuity
2508:Sex therapy
2486:Gynaecology
2128:Ornithology
1096:Human penis
1028:Terminology
840:masculinity
678:human penis
542:spinal cord
525:ejaculation
426:ejaculation
235:vasodilator
136:Identifiers
82:Identifiers
4363:Categories
4348:Vaginismus
4318:Anorgasmia
4172:Adrenarche
4167:Spermarche
4147:Gonadarche
3782:Sexecology
3554:Casual sex
3513:Asexuality
3298:Strip club
3281:Sex worker
3254:Sex museum
3225:Film actor
3093:Paraphilia
3019:Manual sex
2873:By country
2798:Orgasm gap
2715:Blue Movie
2334:Physiology
2144:5 December
1825:2012-01-29
1535:2013-11-07
1423:2021-10-22
1122:References
1010:bird penis
997:tumescence
825:paroxetine
722:Angle (°)
699:colchicine
589:public sex
481:trabecular
310:Physiology
239:trabecular
4379:Andrology
4274:Lactation
4264:Thelarche
4241:Andrology
4188:Menopause
4085:Pregnancy
4075:Fertility
4030:Erection
3986:Germ cell
3959:Oogenesis
3947:spermatid
3909:Ovulation
3721:Hypergamy
3641:Polyamory
3596:Free love
3500:phenomena
3420:Sex magic
3398:Mormonism
3315:sexuality
3170:Urolagnia
3160:Tribadism
3108:Sexercise
3086:Irrumatio
3071:Anilingus
3029:Fingering
3009:Group sex
3004:Gang bang
2974:Fetishism
2949:Child sex
2803:Polyamory
2783:Free love
2645:Obscenity
2569:diversity
2481:Andrology
2443:education
2408:Pregnancy
2000:The Horse
1551:Eur. Urol
1399:144906565
1086:Cock ring
1022:lake duck
801:andrology
684:Direction
671:pubescent
463:into the
422:urination
297:impotence
4211:Vivipary
4181: /
4162:Menarche
4157:Pubarche
4039:Clitoral
3991:gonocyte
3964:oogonium
3894:Menarche
3760:See also
3705:Swinging
3675:Sex life
3631:Marriage
3601:Foreplay
3591:Flirting
3559:Celibacy
3488:sexology
3327:Hinduism
3323:Buddhism
3259:Sex shop
3180:Cybersex
3155:Swinging
3138:Foreplay
3081:Fellatio
3061:Oral sex
2954:Creampie
2939:Bareback
2934:Anal sex
2788:Marriage
2778:Flirting
2565:Identity
2518:Sexology
2498:Safe sex
2362:Intersex
2248:11557968
1766:17034495
1675:16828320
1571:16473458
1201:Archived
1111:Priapism
1059:See also
928:May 2024
920:relocate
891:stallion
863:Priapism
858:Priapism
770:120–180
465:arteries
433:foreskin
242:arteries
184:erection
53:Erection
4246:Hormone
4142:Puberty
3415:Thelema
3381:Judaism
3286:Sex toy
3215:Erotica
3103:Quickie
3098:Pompoir
3034:Handjob
2989:Footjob
2979:Fisting
2818:Romance
2793:Modesty
2755:society
2707:History
2491:Urology
2339:biology
2322:Outline
2280:22 July
2226:Bibcode
2194:4089612
2173:The Auk
2110:22 July
2076:22 July
2017:22 July
1947:3503919
1901:22 July
1867:22 July
1744:BJU Int
1620:9292834
1513:22 July
1156:22 July
1049:English
1043:and in
993:4 times
972:A male
956:orifice
945:baculum
918:Please
836:success
832:potency
821:lithium
805:urology
762:95–120
479:in the
410:urethra
382:puberty
194:) is a
147:D010410
93:D010410
4302:Female
4256:Breast
4059:Female
4046:Orgasm
4034:Penile
3996:gamete
3969:oocyte
3651:Female
3371:Daoism
3274:Female
3237:Sacred
3150:Sumata
2969:Facial
2959:Edging
2635:Incest
2456:Condom
2438:Health
2382:Female
2377:Orgasm
2367:Libido
2271:
2246:
2217:Nature
2192:
2135:
2101:
2067:
2040:
2008:
1981:7 July
1952:19 May
1945:
1892:
1858:
1801:nhs.uk
1782:
1764:
1721:
1691:
1673:
1636:
1618:
1569:
1504:
1477:
1397:
1356:
1336:
1303:
1273:
1253:
1228:
1147:
754:85–95
746:60–85
738:30–60
593:nudity
579:Social
523:After
404:. The
250:dilate
212:libido
4389:Penis
3974:ootid
3952:sperm
3376:Islam
3269:Child
2896:Japan
2891:India
2886:China
2212:(PDF)
2190:JSTOR
2168:(PDF)
1943:JSTOR
1925:(PDF)
1395:S2CID
1375:(PDF)
1045:slang
1018:lymph
989:glans
974:fossa
844:shame
765:19.8
749:30.9
741:29.6
730:0–30
669:post-
475:from
437:glans
418:semen
414:urine
274:veins
262:blood
200:penis
170:[
116:[
4297:Male
4206:Ovum
4054:Male
3979:ovum
3626:LGBT
3486:and
3325:and
3291:Doll
2999:Frot
2944:BDSM
2753:and
2660:Rape
2567:and
2384:and
2337:and
2282:2013
2269:ISBN
2244:PMID
2146:2012
2133:ISBN
2112:2013
2099:ISBN
2078:2013
2065:ISBN
2038:ISBN
2019:2013
2006:ISBN
1983:2007
1954:2010
1903:2013
1890:ISBN
1869:2013
1856:ISBN
1780:ISBN
1762:PMID
1719:ISBN
1689:ISBN
1671:PMID
1634:ISBN
1616:PMID
1567:PMID
1515:2013
1502:ISBN
1475:ISBN
1354:ISBN
1334:ISBN
1301:ISBN
1271:ISBN
1251:ISBN
1226:ISBN
1158:2013
1145:ISBN
848:loss
838:and
823:and
773:4.9
757:9.9
733:4.9
658:Size
598:The
535:The
507:and
499:and
424:and
416:and
400:and
295:and
283:and
268:and
244:and
142:MeSH
88:MeSH
4198:Egg
3876:of
2612:Law
2440:and
2324:of
2234:doi
2222:413
2182:doi
2178:117
1935:doi
1752:doi
1711:doi
1663:doi
1608:doi
1559:doi
1387:doi
1326:doi
1293:doi
1055:).
1037:".
814:or
570:).
566:or
233:(a
210:or
190:or
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