Corpus: Dilator naris anterior muscle
1. Definition
The dilator naris anterior muscle is a facial muscle that encircles the nostril laterally, playing a role in the movement of the nostril.
2. Background
In some anatomical sources, the dilator naris anterior muscle is considered a part of the nasalis muscle.
3. Innervation
The dilator naris anterior muscle is innervated by the buccal branches of the facial nerve (cranial nerve VII).
4. Function
The primary function of the dilator naris anterior muscle is to dilate the nostril. It may also help prevent the collapse of the nasal entrance during inspiration, particularly in individuals with narrow nostrils.
5. Source
- AnatomyApp - Dilator naris anterior, accessed 13/06/2024