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Depressor anguli oris

Other Terms: Musculus depressor anguli oris, Muscle abaisseur de l'angle de la bouche

Muscle parts

None

Latin name

Musculus depressor anguli oris

Latin muscle parts

None

Group

Branchial arch muscle – second arch (Facial muscle)

Etymology

The English for this muscle name is the muscle that presses down the corner of the mouth. Depressor comes from the Latin de meaning “down” and premere meaning “to press.” Angulus is the Latin term for “a corner, or bend.” The Latin term oris is from the Latin os meaning “a mouth or opening.”

Origin

Mental tubercle and oblique line of the mandible

Insertion

Modiolus at the angle of the mouth

Action

Contracts to pull the angle of the mouth inferiorly and laterally.

Nerve supply

Facial nerve (Cranial nerve VII)

Blood supply

Inferior labial branch of the facial artery

Latin

Musculus depressor anguli oris

French

Muscle abaisseur de l'angle de la bouche

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