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The anterior belly may be double, or extra slips from this belly may pass to the jaw or mylohyoideus or decussate with a similar slip on opposite side. It may be absent and posterior belly inserted into the middle of the jaw or hyoid bone. It may fuse with the
284:
origins - the anterior belly is derived from the first brachial arch and the posterior belly from the second brachial arch - and consequently differ in their innervation (the former being innervated via CN V and the latter via CN VII).
485:
The digastric muscle is involved in any complex jaw action such as speaking, swallowing, chewing, and breathing. The posterior belly is particularly functionally involved in swallowing and chewing.
280:
The digastric muscle consists of two muscular bellies united by an intermediate tendon. The posterior belly is longer than the anterior belly. The two bellies of the digastric muscle have different
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The intermediate tendon may be absent. The posterior belly may arise partly (by an supplemental strip of muscle) or entirely from the styloid process of the temporal bone. It may be connected by a
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261:; the two bellies are united by an intermediate tendon which is held in a loop that attaches to the hyoid bone. The anterior belly is innervated via the
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The tendon may pass in front, more rarely behind the stylohyoideus. The mentohyoideus muscle passes from the body of hyoid bone to chin.
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The term "digastric muscle" refers to this specific muscle even though there are other muscles in the body to feature two bellies.
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Schiraldi, Michael; Baron, Eli M.; Vaccaro, Alexander R. (2018-01-01), Baron, Eli M.; Vaccaro, Alexander R. (eds.),
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The digastric muscles are present in a variety of animals, specific attachment sites may vary. For example, in the
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Knowledge (XXG) articles incorporating text from the 20th edition of Gray's
Anatomy (1918)
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It extends anteroinferiorly from its osseous attachment toward the intermediate tendon.
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613:"Procedure 5 - Anterior C1-C2 Arthrodesis: Lateral Approach of Barbour and Whitesides"
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The posterior belly is situated posterior to the parotid gland and the facial nerve.
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muscle. The tendon is embraced by a fibrous sling which attaches the body and
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It extends inferoposteriorly from its origin toward the intermediate tendon.
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302:(which is located upon the inferior surface of the skull, medial to the
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The muscle depresses the mandible, and may elevate the hyoid bone.
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619:, Operative Techniques, Philadelphia: Elsevier, pp. 36–40,
269:. It may act to depress the mandible or elevate the hyoid bone.
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250:
565:
Gray's
Anatomy: The Anatomical Basis of Clinical Practice
329:(situated at the base of the mandible near the midline).
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The anterior belly receives motor innervation from the
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at Human
Anatomy Online, SUNY Downstate Medical Center
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Operative
Techniques: Spine Surgery (Third Edition)
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378:mandibular division of the trigeminal nerve (CN V
245:as it has two 'bellies') is a bilaterally paired
265:, and the posterior belly is innervated via the
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473:when the hyoid bone is held in place (by the
433:inferior carotid triangle (muscular triangle)
27:Small muscle located under the jaw in mammals
8:
257:, and its anterior belly is attached to the
421:submandibular triangle (digastric triangle)
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697:
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596:: CS1 maint: location missing publisher (
497:, the posterior digastric attaches to the
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38:
340:The two bellies meet at the intermediate
253:. Its posterior belly is attached to the
568:(42nd ed.). New York. p. 581.
429:submental triangle (suprahyoid triangle)
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447:to the middle or inferior constrictor.
387:The posterior belly is supplied by the
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515:This article incorporates text in the
310:- between the mastoid process and the
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678:Roche Lexicon - illustrated navigator
356:. The tendon occasionally features a
107:Anterior belly - Submental branch of
7:
669:at the SUNY Downstate Medical Center
298:The posterior belly attaches at the
376:, which is in turn a branch of the
325:The anterior belly attaches at the
625:10.1016/b978-0-323-40066-4.00005-9
300:mastoid notch of the temporal bone
263:mandibular nerve (cranial nerve V)
72:Anterior belly - digastric fossa (
44:Muscles of the neck. Lateral view.
25:
419:into four smaller triangles: the
415:The digastric muscle divides the
398:Anterior view of digastric muscle
1126:
509:
389:digastric branch of facial nerve
267:facial nerve (cranial nerve VII)
787:Rectus capitis lateralis muscle
782:Rectus capitis anterior muscle
674:"Anatomy diagram: 25420.000-1"
255:mastoid notch of temporal bone
1:
417:anterior triangle of the neck
1154:Muscles of the head and neck
523:of the 20th edition of
327:digastric fossa of mandible
259:digastric fossa of mandible
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680:. Elsevier. Archived from
217:Anatomical terms of muscle
562:Standring, Susan (2020).
215:
49:
37:
805:Rectus capitis posterior
667:Anatomy photo:24:17-0101
661:Anatomy figure: 34:02-02
501:rather than the hyoid.
374:inferior alveolar nerve
314:of the temporal bone).
150:Opens the jaw when the
1101:Pharyngobasilar fascia
1096:Buccopharyngeal fascia
918:Pharyngeal constrictor
399:
411:Triangles of the neck
397:
344:which perforates the
93:Intermediate tendon (
76:); posterior belly -
1091:Palatine aponeurosis
1059:Deep cervical fascia
1004:transverse arytenoid
174:musculus digastricus
136:; posterior belly -
111:; posterior belly -
1169:Human head and neck
1164:Otorhinolaryngology
1069:Prevertebral fascia
745:Sternocleidomastoid
336:Intermediate tendon
126:mandibular division
56:Front view of neck.
1159:Suprahyoid muscles
1064:Pretracheal fascia
945:Salpingopharyngeus
475:infrahyoid muscles
400:
249:located under the
1114:
1113:
990:oblique arytenoid
634:978-0-323-40066-4
575:978-0-7020-7707-4
469:It depresses the
462:Actions/movements
372:(a branch of the
247:suprahyoid muscle
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230:
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124:Anterior belly -
16:(Redirected from
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1106:Pharyngeal raphe
822:Obliquus capitis
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453:mylohyoid muscle
425:carotid triangle
235:digastric muscle
223:edit on Wikidata
113:occipital artery
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33:Digastric muscle
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940:Stylopharyngeus
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312:styloid process
304:mastoid process
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294:Posterior belly
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134:mylohyoid nerve
132:(CN V) via the
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684:on 2015-02-26.
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517:public domain
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963:Cricothyroid
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797:Suboccipital
755:Longus colli
682:the original
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186:A04.2.03.002
173:
158:are relaxed.
138:facial nerve
128:(V3) of the
1086:Alar fascia
890:Sternohyoid
445:muscle slip
364:Innervation
239:digastricus
163:Identifiers
1143:Categories
1041:Trachealis
885:Thyrohyoid
877:Infrahyoid
867:Geniohyoid
857:Stylohyoid
844:Suprahyoid
640:2020-11-10
584:1201341621
505:References
431:, and the
354:hyoid bone
156:temporalis
130:trigeminal
95:hyoid bone
985:Arytenoid
973:posterior
862:Digastric
852:Mylohyoid
775:posterior
592:cite book
495:orangutan
439:Variation
403:Relations
289:Structure
243:digastric
241:) (named
89:Insertion
18:Digastric
933:inferior
923:superior
900:Omohyoid
832:superior
827:inferior
765:anterior
740:Platysma
732:Cervical
521:page 391
499:mandible
481:Function
471:mandible
154:and the
152:masseter
140:(CN VII)
74:mandible
1133:Anatomy
1051:Fasciae
1033:Trachea
978:lateral
910:Pharynx
760:Scalene
722:of the
720:Muscles
306:of the
276:Anatomy
146:Actions
62:Details
1119:Portal
955:Larynx
928:middle
770:middle
631:
582:
572:
529:(1918)
427:, the
423:, the
342:tendon
237:(also
103:Artery
68:Origin
1016:vocal
815:minor
810:major
519:from
221:[
210:46291
169:Latin
120:Nerve
724:neck
629:ISBN
598:link
580:OCLC
570:ISBN
233:The
198:2160
181:TA98
621:doi
477:).
435:.
384:).
352:of
251:jaw
205:FMA
193:TA2
80:of
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676:.
627:,
615:,
594:}}
590:{{
578:.
536:^
455:.
391:.
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712:e
705:t
698:v
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380:3
225:]
97:)
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
