Facial nerve

The facial nerve, also called the seventh cranial nerve, controls the muscles involved in facial expressions like smiling, frowning, and blinking. It also carries sensory information from parts of the ear and provides taste sensation to the front of the tongue. Additionally, it helps regulate some glands that produce tears and saliva. The nerve originates in the brainstem and travels through the skull to reach the face. Proper functioning of the facial nerve is essential for expressing emotions, tasting, and maintaining healthy skin and eye protection. Damage to this nerve can lead to weakness or paralysis of facial muscles.