Mentalis

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Mentalis
Muscles of the head, face, and neck.
Latin musculus mentalis
Gray's p.383
Origin anterior mandible
Insertion    chin
Artery
Nerve mandibular branch of facial nerve
Actions elevates and wrinkles skin of chin, protrudes lower lip

The mentalis is a paired central muscle of the lower lip, situated at the tip of the chin.[1] It raises and pushes up the lower lip, causing wrinkling of the chin, as in doubt or displeasure. It is sometimes referred to as the "pouting muscle."

Its fibers arise from the incisive fossa of the mandible, then course vertically downward to insert in the skin of the chin.

Geniospasm is a genetic movement disorder of the mentalis muscle.

Additional images

  • Outer surface of mandible. Mentalis is indicated by the red circle at left.

  • Position of mentalis (red).

  • Action of the mentalis muscle.

References

  1. ↑ http://emedicine.medscape.com/article/835209-overview

External links

Extraocular (CN III, IV, VI)
Mastication (CN V3)

masseter · temporalis (sphenomandibularis) · pterygoid (lateral, medial)

fascia: Masseteric fascia · Temporal fascia · Deep portion: cementomaxillary tendon · Superficial portion: cementomandibular tendon
Facial (CN VII)
Palate/fauces (CN IX, X, XI)
(except TVP=V3)
veli palatini (tensor, levator) · musculus uvulae · palatopharyngeus (to pharynx) · palatoglossus (to tongue)
Tongue (CN XII)

M: MUS, DF+DRCT

anat (h/n, u, t/d, a/p, l)/phys/devp/hist

noco (m, s, c)/cong (d)/tumr, sysi/epon, injr

proc, drug (M1A/3)

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