Quick Facts
Origin: Area of maxilla superolateral to incisive fossa.
Insertion: Aponeurotic fascia crossing bridge of nose.
Action: Compresses nostrils.
Innervation: Buccal branches of facial nerve (CN VII).
Arterial Supply: Superior labial and infraorbital arteries.
Related parts of the anatomy
Origin
The nasalis muscle is divided into transverse and alar parts. The transverse part of the nasalis muscle arises from the maxilla, superolateral to the incisive fossa.
Insertion
The transverse part of the nasalis muscle blends with its contralateral counterpart via an aponeurotic fascia crossing the bridge of the nose.
Actions
The transverse part of the nasalis muscle compresses the nostrils (Standring, 2016).
List of Clinical Correlates
- Bell’s palsy
References
Standring, S. (2016) Gray's Anatomy: The Anatomical Basis of Clinical Practice. Gray's Anatomy Series 41st edn.: Elsevier Limited.
