GENERAL HISTOLOGY

Detailed explanation-1: -The trigeminal nerve is the largest of the cranial nerves and provides sensory and motor innervation to the muscles of mastication. [1] More specifically, the sensory information conducted by this nerve includes touch, pain, and temperature.

Detailed explanation-2: -Sensation on the face is innervated by the trigeminal nerves (V) as are the muscles of mastication, but the muscles of facial expression are innervated mainly by the facial nerve (VII) as is the sensation of taste.

Detailed explanation-3: -The glossopharyngeal nerve (CN IX) supplies organs, muscles and other structures in your mouth and throat. It helps you taste food and sense pain in your throat.

Detailed explanation-4: -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).