Musculus uvulae

Anatomy

The muscle is situated in between the two laminae of the palatine aponeurosis. From its origin, it passes posterior-ward superior to the swing that is formed by the levator veli palatini muscle. The musculus uvulae and levator veli palatini muscle form a right angle so that their contraction elevates the levator eminence to aid in separating the oral cavity and the oropharynx.

Origin

The muscle arises from the posterior nasal spine of the palatine bone, and the (superior aspect of the) palatine aponeurosis.

Insertion

The muscle inserts into the mucous membrane of the uvula.

Vasculature

The muscle receives arterial blood from the ascending palatine artery, and the descending palatine artery.

Actions/movements

Bilateral contraction of the two muscles shortens the uvula. It also elevates and retracts the uvula.

Unilateral contraction draws the uvula ipsilaterally.