Depressor Anguli Oris muscle

Authors
Affiliations

Nathaniel Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

OIAN

Muscle Origin Insertion Nerve Action
Depressor Anguli Oris

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Origin

Mandible (oblique line below canine, premolar, and 1st molar teeth)1

Insertion

Skin at corner of the mouth; Blends with orbicularis oris1

Innervation

Facial Nerve CN VII1

Action

Pulls angle of mouth inferiorly and laterally1

Clinical Significance

1.
Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.

Citation

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