Hypoglossal nerve

This video tutorial explores the anatomy and function of the hypoglossal nerve, the 12th cranial nerve responsible for motor innervation of the tongue and infrahyoid muscles. It details the nerve's pathway from the brainstem through the hypoglossal canal, its role in speech and swallowing, and the clinical implications of nerve damage. The tutorial also discusses the innervation of intrinsic and extrinsic tongue muscles and addresses controversies in the innervation of the thyrohyoid muscle.

Discuss the role of the cervical plexus in relation to the hypoglossal nerve.

What are the extrinsic muscles of the tongue and their functions?

What are the potential causes of lesions in the hypoglossal nerve?

How can you assess the function of the hypoglossal nerve in a patient?