What is hyoglossus innervated by?

Table of Contents

hypoglossal nerve
The hypoglossal nerve, also known as the twelfth cranial nerve, cranial nerve XII, or simply CN XII, is a cranial nerve that innervates all the extrinsic and intrinsic muscles of the tongue except for the palatoglossus, which is innervated by the vagus nerve. CN XII is a nerve with a solely motor function.

What nerve is responsible for tongue pain?

The hypoglossal nerve
The hypoglossal nerve is one of 12 cranial nerves. It’s also known as the 12th cranial nerve, cranial nerve 12 or CNXII. This nerve starts at the base of your brain. It travels down your neck and branches out, ending at the base and underside of your tongue.

What nerve controls styloglossus?

As an extrinsic muscle of the tongue, the styloglossus muscle is innervated by the hypoglossal (XII) nerve. Thus, it is possible to assess the function of the hypoglossal nerve by testing the movements of the tongue. On examination, patients are instructed to protrude the tongue.

What muscles are innervated by CN XII?

The hypoglossal nerve (CN XII) is exclusively a motor nerve carrying general somatic efferent fibers (GSE). It innervates all intrinsic and almost all extrinsic muscles of the tongue, as well as one suprahyoid muscle, the geniohyoid muscle.

What are the symptoms of lingual nerve damage?

A tingling sensation in the tongue.
Numb areas of the tongue.
A distinct loss of taste, or altered taste perception.
Difficulty speaking.
Pain or a burning sensation in the tongue.
Drooling.

What causes tongue nerve damage?

Disorders of the 12th cranial nerve (hypoglossal nerve) cause weakness or wasting (atrophy) of the tongue on the affected side. This nerve moves the tongue. Hypoglossal nerve disorders may be caused by tumors, strokes, infections, injuries, or amyotrophic lateral sclerosis.

What is the main function of CN XII?

Your hypoglossal nerve is the 12th cranial nerve. It’s responsible for the movement of most of the muscles in your tongue. It starts in the medulla oblongata and moves down into the jaw, where it reaches the tongue.