Corpus: Depressor septi muscle
from Latin: deprimere - to depress; septum - wall, separation
1. Definition
The depressor septi nasi muscle is a small muscle located in the nasal area, and it is part of the facial expression muscles (mimic musculature).
2. Course
The depressor septi nasi muscle originates in the incisive fossa of the maxillary bone. The muscle fibers run medially and cranially, inserting into the cartilage of the nasal septum and the cartilage of the nasal wing.
3. Innervation
The depressor septi nasi muscle is innervated by the buccal branches (rami buccales) of the facial nerve, which is the seventh cranial nerve (CN VII).
4. Function
The primary function of the depressor septi nasi muscle is to pull the tip of the nose and parts of the nostril downward.
5. Clinic
In cosmetic procedures, such as rhinoplasty, the depressor septi nasi muscle is often targeted. Botulinum toxin injections can be used to relax this muscle, resulting in the elevation of the nasal tip. Additionally, surgical dissection of this muscle is sometimes performed to achieve similar aesthetic effects.[1][2]
6. Sources
- ↑ Lienhard. Treatment with botulinum toxin in aesthetic medicine, Swiss Journal of Dermatology & Aesthetic Medicine, 2013
- ↑ Rohrich et al Importance of the depressor septi nasi muscle in rhinoplasty: anatomic study and clinical application, Plastic and Reconstructive Surgery, 2000