2-Minute Neuroscience: Hypoglossal Nerve (Cranial Nerve XII)

The hypoglossal nerve (cranial nerve XII) is a motor nerve that controls all of the muscles of the tongue except for one, and is thus critical for things like eating, swallowing, and speaking. In this video, I discuss the anatomy and function of the hypoglossal nerve, as well as the symptoms that can appear when the nerve is damaged.