NEET PG DENTAL EXAM

Detailed explanation-1: -The glossopharyngeal nerve is the 9th cranial nerve (CN IX). It is one of the four cranial nerves that has sensory, motor, and parasympathetic functions. It originates from the medulla oblongata and terminates in the pharynx.

Detailed explanation-2: -CRANIAL NERVE 9 (GLOSSOPHARYNGEAL) AND CRANIAL NERVE 10 (VAGUS) CNs 9 and 10 work together to supply the musculature of the pharynx (mostly supplied by CN 10) and transmit visceral afferent information from vascular baroreceptors, and each nerve also has additional individual functions listed below.

Detailed explanation-3: -The vagus nerve arises from the fourth branchial arch; this arch is also responsible for the development of the pharyngeal and laryngeal muscles, the laryngeal cartilages, the aortic arch, and subclavian artery.

Detailed explanation-4: -A glossopharyngeal nerve palsy is paralysis of the ninth cranial nerve. Clinical features include: loss of sensation-tested by the gag reflex. loss of taste sensation on the posterior 1/3 of the tongue.