GROSS ANATOMY

Detailed explanation-1: -The facial nerve is the 7th cranial nerve and carries nerve fibers that control facial movement and expression. The facial nerve also carries nerves that are involved in taste to the anterior 2/3 of the tongue and producing tears (lacrimal gland).

Detailed explanation-2: -The seventh cranial nerve sends information between the brain and the muscles used in facial expression (such as smiling and frowning), some muscles in the jaw, and the muscles of a small bone in the middle ear.

Detailed explanation-3: -Paralysis can occur if any part of the facial nerve, called the seventh cranial nerve, becomes inflamed or damaged. The facial nerve has branches throughout both sides of the face and controls many muscle groups, including those in the brow, eyelid, cheek, and lips.

Detailed explanation-4: -The chorda tympani provides taste sensation from the anterior 2/3 tongue and also carries preganglionic parasympathetic nerve fibers that innervate the submandibular and sublingual salivary glands.