THORAX ABDOMEN AND PELVIS

MEDICAL

NERVES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which nerve is sensory & motor and responsible for tongue movement and taste?
A
glossopharyngeal (IX)
B
facial (VII)
C
trochlear (IV)
D
hypoglossal (XII)
Explanation: 

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: -The glossopharyngeal (IX) is the most important nerve for the sense of taste. It provides sensory innervation to the base of the tongue and both motor and sensory innervation to part of the pharynx.

Detailed explanation-3: -The Hypoglossal Nerve is the 12th Cranial Nerve (Cranial Nerve XII). It is mainly an efferent nerve for the tongue musculature. The nerve originates from the medulla and travels caudally and dorsally to the tongue.

Detailed explanation-4: -Glossopharyngeal Nerve Function The glossopharyngeal nerve carries many types of nerve fibers and has multiple functions, regulating: Taste sensations from the rearmost third of the tongue. Sensations from the tonsils, back of the throat, middle ear, and the area behind the ear.

There is 1 question to complete.