The abducens nerve (cranial nerve VI) is a motor nerve that supplies one of the extraocular muscles of the eye: the lateral rectus muscle. In this video, I discuss the anatomy and function of the abducens nerve, as well as describe what can happen when the nerve is damaged.
A concussion is a type of mild traumatic brain injury that occurs when rapid movement of the head or an impact to the head causes the brain to move within the skull, potentially stretching axons and damaging cell membranes of neurons. In this video, I discuss the biochemical and structural changes in the brain that are associated with the symptoms of a concussion.
The trigeminal nerve (cranial nerve V) is the main sensory nerve of the head, and carries information about touch, pain, temperature, and proprioception from the face and head. It also has motor functions, which involve controlling the muscles of mastication (chewing). In this video, I discuss the anatomy and function of the trigeminal nerve, as well as describe what can happen when the nerve is damaged.