*** Welcome to piglix ***

Nasalis muscle

Nasalis muscle
Nasalis.png
Muscles of the head, face, and neck. (Nasalis labeled at center left.)
Details
Origin Maxilla
Insertion Nasal bone
Artery Superior labial artery
Nerve Buccal branch of the facial nerve
Actions Compresses bridge, depresses tip of nose, elevates corners of nostrils
Identifiers
Latin musculus nasalis
TA A04.1.03.009
FMA 46770
Anatomical terms of muscle
[]

The nasalis is a sphincter-like muscle of the nose whose function is to compress the nasal cartilages. It is the muscle responsible for "flaring" of the nostrils. Some people can use it to close the nostrils to prevent entry of water when underwater.

It consists of two parts, transverse and alar:

Position of nasalis muscle (shown in red).

Left maxilla. Outer surface.



...
Wikipedia

...