What does cranial nerve XI do?

The accessory nerve, also known as the eleventh cranial nerve, cranial nerve XI, or simply CN XI, is a cranial nerve that supplies the sternocleidomastoid and trapezius muscles.

What happens when the accessory nerve is damaged?

The spinal accessory nerve originates in the brain and enables motion in the trapezius and sternomastoid muscles in the neck. A spinal accessory nerve injury can be caused by trauma or damage during surgery, resulting in shoulder pain, “winging” of the shoulder blades and weakness of the trapezius muscle.

What is the glossopharyngeal nerve responsible for?

The glossopharyngeal nerve is the ninth set of 12 cranial nerves (CN IX). It provides motor, parasympathetic and sensory information to your mouth and throat. Among its many functions, the nerve helps raise part of your throat, enabling swallowing.

What does the hypoglossal nerve control?

The hypoglossal nerve enables tongue movement. It controls the hyoglossus, intrinsic, genioglossus and styloglossus muscles. These muscles help you speak, swallow and move substances around in your mouth.

How is the hypoglossal nerve tested?

The hypoglossal nerve can be examined by asking a patient to protrude their tongue, move their tongue laterally, and place their tongue against their cheek to resist the opposing force of the examiner’s hand resting on the external cheek.

What is the name of cranial nerve 11?

The Spinal Accessory Nerve
The Spinal Accessory Nerve (SAN) or Cranial Nerve 11 is termed a cranial nerve as it was originally believed to originate in the brain. It has both a cranial and a spinal part, though debate still rages regarding if the cranial part is really a part of the SAN or part of the vagus nerve.

What is a CN XII lesion?

CN XII involvement is seen with many of the peripheral lesions that affect the spinal accessory nerve because they are anatomically close at that level.33 Metastases. Unilateral 12th nerve palsy (CN XII) is one of the more common cranial mononeuropathies caused from brain metastases.

Is the accessory nerve (CN XI) a cranial nerve?

The accessory nerve (CN XI) is probably one of the most controversial of the twelve cranial nerves. There is significant dispute throughout the medical literature regarding whether or not the nerve should truly be classified as a cranial nerve.

What is another word for CN XI?

Synonyms: Cranial nerve XI, CN XI , show more… The accessory nerve (CN XI) is probably one of the most controversial of the twelve cranial nerves. There is significant dispute throughout the medical literature regarding whether or not the nerve should truly be classified as a cranial nerve.

What causes a lesion on the XII nerve?

The XII nerve may also be involved in more extensive lesions occurring in the posterior later-ocondylar space (syndrome of Collet-Sicard); causes include parotid tumors, carotid body tumors, adenopathy of whatever cause, and tuberculosis involving the lymph nodes. Sarcoidosis is another cause.