322:. In exhalation the interosseous portions of the internal intercostal muscles, (the part of the muscle that is between the bone portion of the superior and inferior ribs), depresses and retracts the ribs, compressing the thoracic cavity and expelling air. The internal intercostals, however, are only used in forceful exhalation such as coughing or during exercise and not in relaxed breathing. The external intercostal muscles, and the parasternal part of the internal intercostal muscles, (the part of the muscle that lies between the cartilage portion of the superior and inferior ribs), are used in inspiration, by aiding in elevating the ribs and expanding the thoracic cavity.
334:
36:
831:
102:
358:
346:
375:
851:
315:. The internal intercostal muscles originate from the costal groove of the rib and insert into the superior aspect of the rib below in a direction perpendicular to the external intercostal muscles. It is this arrangement that allows these muscles to facilitate exhalation.
489:
333:
235:
482:
475:
461:
211:
404:
Tang A, Bordoni B. Anatomy, Thorax, Muscles. . In: StatPearls . Treasure Island (FL): StatPearls
Publishing; 2020 Jan-. Available from:
736:
731:
79:
57:
856:
230:
706:
696:
312:
182:
718:
357:
821:
723:
242:
167:
130:
117:
776:
536:
50:
44:
647:
625:
531:
345:
830:
546:
218:
206:
61:
640:
635:
597:
384:
101:
804:
665:
582:
148:
691:
455:
177:
743:
713:
602:
574:
160:
771:
592:
587:
389:
280:
17:
781:
766:
761:
630:
612:
523:
296:
311:
Their fibers are also directed obliquely, but pass in a direction opposite to those of the
799:
753:
268:
303:, the posterior intercostal membranes. They pull the sternum and ribs upward and inward.
464:
at Human
Anatomy Online, SUNY Downstate Medical Center - "Transverse section of thorax."
295:, and extend backward as far as the angles of the ribs, hence they are continued to the
835:
845:
435:
425:
Anatomy and
Physiology: The Unity of Form and Function 5th Edition by Kenneth Saladin
380:
276:
852:
Knowledge articles incorporating text from the 20th edition of Gray's
Anatomy (1918)
554:
467:
559:
405:
300:
514:
506:
319:
292:
223:
620:
288:
284:
275:. They are eleven in number on either side. They commence anteriorly at the
564:
458:
at the SUNY Downstate
Medical Center - "The Internal Intercostal Muscle"
248:
791:
679:
657:
502:
498:
143:
194:
155:
416:
Basic Human
Anatomy - O'Rahilly, Müller, Carpenter & Swenson
471:
272:
135:
122:
29:
291:, and at the anterior extremities of the cartilages of the
339:
Position of internal intercostal muscles (red). Animation.
819:
790:
752:
678:
656:
611:
573:
545:
522:
513:
229:
217:
205:
193:
188:
176:
166:
154:
142:
129:
116:
111:
94:
106:Internal intercostal muscles (red) seen from back.
483:
406:https://www.ncbi.nlm.nih.gov/books/NBK538321/
8:
684:
519:
490:
476:
468:
363:Thoracic portion of the sympathetic trunk.
100:
436:"The Action of the Internal Intercostals"
80:Learn how and when to remove this message
43:This article includes a list of general
826:
397:
329:
318:For the most part, they are muscles of
379:This article incorporates text in the
246:
91:
7:
49:it lacks sufficient corresponding
25:
27:Group of muscles between the ribs
829:
373:
356:
351:The obliquus internus abdominis.
344:
332:
34:
1:
200:musculi intercostales interni
18:Intercostales interni muscles
313:external intercostal muscles
261:internal intercostal muscles
183:External intercostal muscles
95:Internal intercostal muscles
387:of the 20th edition of
873:
243:Anatomical terms of muscle
687:
241:
99:
462:Anatomy figure: 18:03-03
456:Anatomy photo:18:03-0101
64:more precise citations.
265:intercostales interni
857:Muscles of the torso
805:clavipectoral fascia
719:transversus thoracis
666:thoracolumbar fascia
271:located between the
149:Intercostal arteries
728:serratus posterior
692:Intercostal muscles
744:thoracic diaphragm
724:levatores costarum
603:intertransversarii
575:Transversospinales
281:intercostal spaces
161:Intercostal nerves
138:- inferior border
817:
816:
813:
812:
777:serratus anterior
674:
673:
326:Additional images
267:) are a group of
257:
256:
252:
125:- superior border
90:
89:
82:
16:(Redirected from
864:
834:
833:
825:
767:pectoralis minor
762:pectoralis major
685:
648:levator scapulae
626:latissimus dorsi
613:Vertebral column
520:
492:
485:
478:
469:
444:
443:
432:
426:
423:
417:
414:
408:
402:
377:
376:
360:
348:
336:
297:vertebral column
269:skeletal muscles
249:edit on Wikidata
236:9757 74085, 9757
172:Hold ribs steady
104:
92:
85:
78:
74:
71:
65:
60:this article by
51:inline citations
38:
37:
30:
21:
872:
871:
867:
866:
865:
863:
862:
861:
842:
841:
840:
828:
820:
818:
809:
800:pectoral fascia
786:
754:Thoracic cavity
748:
670:
652:
607:
569:
541:
509:
496:
452:
447:
434:
433:
429:
424:
420:
415:
411:
403:
399:
374:
371:
364:
361:
352:
349:
340:
337:
328:
309:
253:
107:
86:
75:
69:
66:
56:Please help to
55:
39:
35:
28:
23:
22:
15:
12:
11:
5:
870:
868:
860:
859:
854:
844:
843:
839:
838:
815:
814:
811:
810:
808:
807:
802:
796:
794:
788:
787:
785:
784:
779:
774:
769:
764:
758:
756:
750:
749:
747:
746:
741:
740:
739:
734:
726:
721:
716:
711:
710:
709:
704:
699:
688:
682:
676:
675:
672:
671:
669:
668:
662:
660:
654:
653:
651:
650:
645:
644:
643:
638:
628:
623:
617:
615:
609:
608:
606:
605:
600:
595:
590:
585:
579:
577:
571:
570:
568:
567:
562:
557:
551:
549:
547:erector spinae
543:
542:
540:
539:
534:
528:
526:
517:
511:
510:
497:
495:
494:
487:
480:
472:
466:
465:
459:
451:
450:External links
448:
446:
445:
427:
418:
409:
396:
390:Gray's Anatomy
370:
367:
366:
365:
362:
355:
353:
350:
343:
341:
338:
331:
327:
324:
308:
305:
255:
254:
245:
239:
238:
233:
227:
226:
221:
215:
214:
209:
203:
202:
197:
191:
190:
186:
185:
180:
174:
173:
170:
164:
163:
158:
152:
151:
146:
140:
139:
133:
127:
126:
120:
114:
113:
109:
108:
105:
97:
96:
88:
87:
42:
40:
33:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
869:
858:
855:
853:
850:
849:
847:
837:
832:
827:
823:
806:
803:
801:
798:
797:
795:
793:
789:
783:
780:
778:
775:
773:
770:
768:
765:
763:
760:
759:
757:
755:
751:
745:
742:
738:
735:
733:
730:
729:
727:
725:
722:
720:
717:
715:
712:
708:
705:
703:
700:
698:
695:
694:
693:
690:
689:
686:
683:
681:
677:
667:
664:
663:
661:
659:
655:
649:
646:
642:
639:
637:
634:
633:
632:
629:
627:
624:
622:
619:
618:
616:
614:
610:
604:
601:
599:
598:interspinales
596:
594:
591:
589:
586:
584:
581:
580:
578:
576:
572:
566:
563:
561:
558:
556:
553:
552:
550:
548:
544:
538:
535:
533:
530:
529:
527:
525:
521:
518:
516:
512:
508:
504:
500:
493:
488:
486:
481:
479:
474:
473:
470:
463:
460:
457:
454:
453:
449:
441:
437:
431:
428:
422:
419:
413:
410:
407:
401:
398:
395:
394:
391:
388:
386:
382:
381:public domain
368:
359:
354:
347:
342:
335:
330:
325:
323:
321:
316:
314:
306:
304:
302:
298:
294:
290:
286:
282:
278:
274:
270:
266:
262:
250:
244:
240:
237:
234:
232:
228:
225:
222:
220:
216:
213:
210:
208:
204:
201:
198:
196:
192:
187:
184:
181:
179:
175:
171:
169:
165:
162:
159:
157:
153:
150:
147:
145:
141:
137:
134:
132:
128:
124:
121:
119:
115:
110:
103:
98:
93:
84:
81:
73:
63:
59:
53:
52:
46:
41:
32:
31:
19:
701:
583:semispinalis
555:iliocostalis
440:www.yorku.ca
439:
430:
421:
412:
400:
392:
378:
372:
317:
310:
283:between the
264:
260:
258:
212:A04.4.01.013
199:
76:
67:
48:
714:subcostalis
560:longissimus
301:aponeuroses
189:Identifiers
62:introducing
846:Categories
772:subclavius
588:multifidus
369:References
320:exhalation
293:false ribs
285:cartilages
178:Antagonist
45:references
782:sternalis
707:innermost
621:trapezius
593:rotatores
307:Structure
289:true ribs
279:, in the
131:Insertion
737:superior
732:inferior
702:internal
697:external
631:rhomboid
565:spinalis
537:cervicis
524:splenius
385:page 403
299:by thin
70:May 2015
836:Anatomy
532:capitis
501:of the
499:Muscles
287:of the
277:sternum
168:Actions
112:Details
58:improve
822:Portal
792:Fascia
680:Thorax
658:Fascia
503:thorax
393:(1918)
144:Artery
118:Origin
47:, but
641:minor
636:major
383:from
247:[
195:Latin
156:Nerve
515:Back
507:back
505:and
273:ribs
259:The
224:2312
207:TA98
231:FMA
219:TA2
136:Rib
123:Rib
848::
438:.
824::
491:e
484:t
477:v
442:.
263:(
251:]
83:)
77:(
72:)
68:(
54:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
