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Depressor Anguli Oris
Region: Head & Neck Muscles · All head & neck muscles
Depressor Anguli Oris at a glance
| Origin | Oblique line of the mandible |
|---|---|
| Insertion | Angle (corner) of the mouth |
| Actions | Pulls the corner of the mouth down, as in frowning |
| Nerve supply | Facial nerve (CN VII), marginal mandibular branch |
◆ Good to know
The marginal mandibular branch of the facial nerve runs just deep to it — injury causes an asymmetric frown and is a known risk in submandibular gland surgery.
More Head & Neck Muscles
Please note: This page is an anatomy education summary for students and curious readers, not medical advice. Attachment points are given in their classic short form; individual anatomy varies, and detailed dissection-level descriptions belong in an anatomy atlas.