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Mentalis

Anatomy

Origin:
Mandible inferior to the incisor teeth.

Insertion:
Skin of the chin.

Key Relations:
Deepest muscle along the mandible.

Raises and protrudes the lower lip as it wrinkles the skin of chin.

e.g. when pouting or drinking from a glass..

Nerve Supply:
Mandibular branch of the facial nerve (CN 7).

Blood Supply:
Inferior labial branch of the facial artery.

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