Head, Neck, and Face muscles

HYOGLOSSUS

Tongue is made up of a group of muscles. There are two major types of tongue muscles: intrinsic muscles and extrinsic muscles. The 4 intrinsic muscles of the tongue are those situated inside the tongue. The 4 extrinsic muscles of the tongue are those that attach to the outside of the tongue from the jaw. Hyoglossus muscle is an extrinsic muscle of the tongue.

Published December 22, 2021

Origin

Hyoid bone.

Insertion

Into the sides of the tongue.

Blood supply

Lingual artery.

Nerve supply

Hypoglossal nerve.

Action

It depresses the tongue, sliding it downward.

Disease/Injury

Neurological damage or diseases of hypoglossal nerve such as pseudobulbar palsy can cause loss of movement of the tongue. Lack of use can also weaken the tongue and lose the ability to form words and guide food properly.

Muscle Exercise

Interesting Facts