depressor septi nasi

Introduction

Facial muscle of the nose.

Origin

maxilla superior to the central incisor

Insertion

mobile part of the nasal septum

Action

• works with alar (dilator) part of the nasalis muscle to widen the nares during deep inspiration
• depresses nasal septum

Innervation

buccal branch of the facial nerve (CN VII)

More general terms

• skeletal muscle (voluntary muscle)