459:
29:
447:
423:
435:
49:
376:. A concerted effort of the lateral pterygoid muscles helps in lowering the mandible and opening the jaw. Unilateral action of a lateral pterygoid muscle causes contralateral excursion (a form of
387:
Unlike the other three muscles of mastication, the lateral pterygoid alone can assist in depressing the mandible (opening the jaw). At the beginning of this action it is assisted by the
458:
201:
965:
660:
1181:
1176:
329:
242:
120:
1216:
286:
177:
921:
733:
408:
1050:
618:
485:
Murray, Greg M.; Bhutada, Manish; Peck, Christopher C.; Phanachet, Intira; Sae-Lee, Daraporn; Whittle, Terry (1 April 2007).
633:
80:
653:
446:
422:
196:
1045:
916:
612:
1186:
1091:
960:
909:
854:
208:
143:
95:
71:
1191:
849:
844:
1007:
1002:
992:
904:
887:
861:
646:
491:
434:
1108:
1022:
789:
699:
694:
381:
345:
317:
297:
290:
250:
238:
132:
88:
57:
543:"The human lateral pterygoid muscle: A review of some experimental aspects and possible clinical relevance"
750:
738:
716:
711:
277:
The upper head originates on the infratemporal surface and infratemporal crest of the greater wing of the
184:
172:
1096:
726:
38:
486:
1113:
953:
721:
987:
681:
368:
The primary function of the lateral pterygoid muscle is to pull the head of the condyle out of the
892:
772:
28:
1123:
1060:
1032:
839:
801:
572:
564:
516:
508:
305:
897:
597:
554:
500:
392:
369:
357:
349:
333:
254:
246:
136:
53:
1103:
943:
806:
767:
762:
301:
108:
1148:
948:
822:
626:
559:
542:
309:
282:
34:
504:
1210:
1160:
278:
1155:
1138:
464:
Distribution of the maxillary and mandibular nerves, and the submaxillary ganglion.
265:. When each muscle works independently, they can move the mandible side to side.
41:
have been removed (labeled as "pterygoideus externus", visible in pink at center)
1078:
975:
377:
234:
1143:
935:
673:
396:
568:
512:
189:
388:
576:
520:
495:. Special Issue: International Mastication Symposium, Brisbane, June 2006.
1055:
1027:
606:
384:. When they work independently, they can move the mandible side to side.
373:
262:
592:
638:
214:
875:
669:
115:
60:(labeled as "pterygoideus externus", visible in gray at bottom left)
148:
Depresses and protrudes mandible, side to side movement of mandible
48:
871:
158:
127:
273:
The lateral pterygoid muscle has an upper head and a lower head.
595:
at The
Anatomy Lesson by Wesley Norman (Georgetown University) (
642:
831:
541:
Murray, G. M.; Phanachet, I.; Uchida, S.; Whittle, T. (2004).
296:
The lower head originates on the lateral surface of the
1169:
1131:
1122:
1077:
974:
934:
870:
830:
821:
749:
680:
195:
183:
171:
157:
152:
142:
126:
114:
94:
70:
65:
21:
407:The lateral pterygoid muscle may be involved in
344:The lateral pterygoid muscle is supplied by the
452:Plan of branches of internal maxillary artery.
428:Sphenoid bone. Anterior and inferior surfaces.
654:
372:along the articular eminence to protrude the
8:
328:The lateral pterygoid muscle is supplied by
237:. It has two heads. It lies superior to the
103:: anterior side of the mandibular condyle.
1128:
980:
880:
827:
755:
661:
647:
639:
47:
27:
558:
380:), usually performed in concert with the
474:
418:
212:
121:Pterygoid branches of maxillary artery
81:infratemporal surface of sphenoid bone
18:
966:Levator labii superioris alaeque nasi
623:Roche Lexicon - illustrated navigator
7:
536:
534:
532:
530:
487:"The human lateral pterygoid muscle"
480:
478:
440:Mandible. Inner surface. Side view.
409:temporomandibular joint dysfunction
560:10.1111/j.1834-7819.2004.tb00042.x
261:). It depresses and protrudes the
14:
505:10.1016/j.archoralbio.2006.10.002
457:
445:
433:
421:
164:musculus pterygoideus lateralis,
619:"Anatomy diagram: 25420.000-1"
166:musculus pterygoideus externus
1:
1217:Muscles of the head and neck
922:Levator palpebrae superioris
734:Levator palpebrae superioris
1233:
1051:Depressor labii inferioris
634:Cross section at tufts.edu
625:. Elsevier. Archived from
356:), itself a branch of the
209:Anatomical terms of muscle
1041:
1018:
983:
883:
758:
547:Australian Dental Journal
231:external pterygoid muscle
207:
46:
26:
993:Levator labii superioris
492:Archives of Oral Biology
316:It lies superior to the
227:lateral pterygoid muscle
22:Lateral pterygoid muscle
346:lateral pterygoid nerve
318:medial pterygoid muscle
298:lateral pterygoid plate
291:temporomandibular joint
251:lateral pterygoid nerve
239:medial pterygoid muscle
133:Lateral pterygoid nerve
89:lateral pterygoid plate
58:temporomandibular joint
300:. It inserts onto the
281:. It inserts onto the
1182:Inferior longitudinal
1177:Superior longitudinal
1046:Depressor anguli oris
917:Corrugator supercilii
598:musclesofmastication2
403:Clinical significance
39:ramus of the mandible
37:and a portion of the
33:The Pterygoidei; the
16:Muscle of mastication
961:Depressor septi nasi
910:depressor supercilii
241:. It is supplied by
988:Levator anguli oris
304:at the neck of the
773:sphenomandibularis
348:, a branch of the
330:pterygoid branches
243:pterygoid branches
1204:
1203:
1200:
1199:
1073:
1072:
1069:
1068:
1061:Transversus menti
930:
929:
905:Orbicularis oculi
888:Occipitofrontalis
862:Temporoparietalis
817:
816:
415:Additional images
382:medial pterygoids
306:condyloid process
233:) is a muscle of
223:
222:
218:
1224:
1129:
1109:Palatopharyngeus
1023:Orbicularis oris
981:
881:
828:
756:
663:
656:
649:
640:
630:
581:
580:
562:
538:
525:
524:
482:
461:
449:
437:
425:
370:mandibular fossa
358:trigeminal nerve
350:mandibular nerve
334:maxillary artery
255:mandibular nerve
247:maxillary artery
215:edit on Wikidata
137:mandibular nerve
54:Sagittal section
51:
31:
19:
1232:
1231:
1227:
1226:
1225:
1223:
1222:
1221:
1207:
1206:
1205:
1196:
1165:
1118:
1104:Musculus uvulae
1065:
1037:
1014:
970:
926:
866:
813:
745:
739:superior tarsal
676:
667:
617:
589:
584:
540:
539:
528:
484:
483:
476:
472:
465:
462:
453:
450:
441:
438:
429:
426:
417:
405:
366:
355:
342:
326:
302:pterygoid fovea
287:fibrous capsule
271:
260:
219:
165:
109:pterygoid fovea
61:
42:
17:
12:
11:
5:
1230:
1228:
1220:
1219:
1209:
1208:
1202:
1201:
1198:
1197:
1195:
1194:
1189:
1184:
1179:
1173:
1171:
1167:
1166:
1164:
1163:
1158:
1153:
1152:
1151:
1149:chondroglossus
1141:
1135:
1133:
1126:
1120:
1119:
1117:
1116:
1111:
1106:
1101:
1100:
1099:
1094:
1083:
1081:
1075:
1074:
1071:
1070:
1067:
1066:
1064:
1063:
1058:
1053:
1048:
1042:
1039:
1038:
1036:
1035:
1030:
1025:
1019:
1016:
1015:
1013:
1012:
1011:
1010:
1005:
995:
990:
984:
978:
972:
971:
969:
968:
963:
958:
957:
956:
946:
940:
938:
932:
931:
928:
927:
925:
924:
919:
914:
913:
912:
902:
901:
900:
895:
884:
878:
868:
867:
865:
864:
859:
858:
857:
852:
847:
836:
834:
825:
819:
818:
815:
814:
812:
811:
810:
809:
804:
794:
793:
792:
787:
777:
776:
775:
765:
759:
753:
747:
746:
744:
743:
742:
741:
731:
730:
729:
724:
719:
714:
704:
703:
702:
697:
686:
684:
678:
677:
668:
666:
665:
658:
651:
643:
637:
636:
631:
629:on 2015-02-26.
615:
602:
588:
587:External links
585:
583:
582:
526:
499:(4): 377–380.
473:
471:
468:
467:
466:
463:
456:
454:
451:
444:
442:
439:
432:
430:
427:
420:
416:
413:
404:
401:
365:
362:
353:
341:
338:
325:
322:
314:
313:
294:
283:articular disc
270:
267:
258:
221:
220:
211:
205:
204:
199:
193:
192:
187:
181:
180:
175:
169:
168:
161:
155:
154:
150:
149:
146:
140:
139:
130:
124:
123:
118:
112:
111:
98:
92:
91:
74:
68:
67:
63:
62:
52:
44:
43:
35:zygomatic arch
32:
24:
23:
15:
13:
10:
9:
6:
4:
3:
2:
1229:
1218:
1215:
1214:
1212:
1193:
1190:
1188:
1185:
1183:
1180:
1178:
1175:
1174:
1172:
1168:
1162:
1161:Palatoglossus
1159:
1157:
1154:
1150:
1147:
1146:
1145:
1142:
1140:
1137:
1136:
1134:
1130:
1127:
1125:
1121:
1115:
1114:Palatoglossus
1112:
1110:
1107:
1105:
1102:
1098:
1095:
1093:
1090:
1089:
1088:
1087:Veli palatini
1085:
1084:
1082:
1080:
1076:
1062:
1059:
1057:
1054:
1052:
1049:
1047:
1044:
1043:
1040:
1034:
1031:
1029:
1026:
1024:
1021:
1020:
1017:
1009:
1006:
1004:
1001:
1000:
999:
996:
994:
991:
989:
986:
985:
982:
979:
977:
973:
967:
964:
962:
959:
955:
954:dilator naris
952:
951:
950:
947:
945:
942:
941:
939:
937:
933:
923:
920:
918:
915:
911:
908:
907:
906:
903:
899:
896:
894:
891:
890:
889:
886:
885:
882:
879:
877:
873:
869:
863:
860:
856:
853:
851:
848:
846:
843:
842:
841:
838:
837:
835:
833:
829:
826:
824:
820:
808:
805:
803:
800:
799:
798:
795:
791:
788:
786:
783:
782:
781:
778:
774:
771:
770:
769:
766:
764:
761:
760:
757:
754:
752:
748:
740:
737:
736:
735:
732:
728:
725:
723:
720:
718:
715:
713:
710:
709:
708:
705:
701:
698:
696:
693:
692:
691:
688:
687:
685:
683:
679:
675:
671:
664:
659:
657:
652:
650:
645:
644:
641:
635:
632:
628:
624:
620:
616:
614:
610:
608:
603:
600:
599:
594:
591:
590:
586:
578:
574:
570:
566:
561:
556:
552:
548:
544:
537:
535:
533:
531:
527:
522:
518:
514:
510:
506:
502:
498:
494:
493:
488:
481:
479:
475:
469:
460:
455:
448:
443:
436:
431:
424:
419:
414:
412:
410:
402:
400:
398:
394:
390:
385:
383:
379:
375:
371:
363:
361:
359:
351:
347:
339:
337:
335:
331:
323:
321:
319:
311:
307:
303:
299:
295:
292:
288:
284:
280:
279:sphenoid bone
276:
275:
274:
268:
266:
264:
256:
252:
248:
244:
240:
236:
232:
228:
216:
210:
206:
203:
200:
198:
194:
191:
188:
186:
182:
179:
176:
174:
170:
167:
162:
160:
156:
151:
147:
145:
141:
138:
134:
131:
129:
125:
122:
119:
117:
113:
110:
106:
105:Inferior head
102:
101:Superior head
99:
97:
93:
90:
86:
85:Inferior head
82:
78:
77:Superior head
75:
73:
69:
64:
59:
55:
50:
45:
40:
36:
30:
25:
20:
1156:Styloglossus
1139:Genioglossus
1086:
997:
796:
784:
779:
706:
689:
627:the original
622:
604:
596:
550:
546:
496:
490:
406:
386:
367:
343:
340:Nerve supply
327:
324:Blood supply
315:
272:
230:
226:
224:
178:A04.1.04.006
163:
104:
100:
84:
76:
1079:Soft palate
998:Zygomaticus
893:occipitalis
751:Masticatory
682:Extraocular
378:mastication
235:mastication
153:Identifiers
1187:Transverse
1144:Hyoglossus
1033:Buccinator
802:masseteric
768:Temporalis
553:(1): 2–8.
470:References
397:geniohyoid
253:(from the
249:, and the
1170:Intrinsic
1132:Extrinsic
898:frontalis
855:posterior
840:Auricular
780:Pterygoid
607:Mnemonics
569:1834-7819
513:0003-9969
399:muscles.
393:mylohyoid
389:digastric
269:Structure
96:Insertion
1211:Category
1192:Vertical
1056:Mentalis
1028:Risorius
944:Procerus
850:superior
845:anterior
807:temporal
763:Masseter
717:inferior
712:superior
700:superior
695:inferior
577:15104127
521:17141177
374:mandible
364:Function
360:(CN V).
310:mandible
263:mandible
1097:levator
949:Nasalis
785:lateral
727:lateral
690:Oblique
672:of the
670:Muscles
605:Medical
593:lesson4
332:of the
308:of the
289:of the
245:of the
144:Actions
66:Details
56:of the
1124:Tongue
1092:tensor
876:eyelid
823:Facial
797:Fascia
790:medial
722:medial
707:Rectus
575:
567:
519:
511:
257:, CN V
116:Artery
72:Origin
1008:minor
1003:major
976:Mouth
872:Scalp
613:70
352:(CN V
213:[
202:49015
159:Latin
135:from
128:Nerve
936:Nose
674:head
609:.com
573:PMID
565:ISSN
517:PMID
509:ISSN
395:and
285:and
229:(or
225:The
190:2109
173:TA98
832:Ear
555:doi
501:doi
197:FMA
185:TA2
1213::
621:.
611::
571:.
563:.
551:49
549:.
545:.
529:^
515:.
507:.
497:52
489:.
477:^
411:.
391:,
336:.
320:.
107::
87::
83:.
79::
874:/
662:e
655:t
648:v
601:)
579:.
557::
523:.
503::
354:3
312:.
293:.
259:3
217:]
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
