GROSS ANATOMY

GROSS ANATOMY

CRANIAL NERVES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which 2 cranial nerves are being tested when a tongue depressor is touched to the back of the throat?
A
Facial nerve
B
Vestibulocochlear nerve
C
Glossopharyngeal nerve
D
Vagus nerve
Explanation: 

Detailed explanation-1: -The glossopharyngeal and vagus nerves innervate the muscles of the pharynx and larynx. These are involved in swallowing and speaking. The glossopharyngeal nerve also carries touch sensation from the posterior one-third of the tongue, tonsils, tympanic membrane, and Eustachian tube.

Detailed explanation-2: -Cranial Nerves IX and CN X Testing Procedures-Palatal Reflex and Gag Reflex. Touching each side of the pharynx with the sterile tongue depressor tests the pharyngeal “gag” reflex.

Detailed explanation-3: -The glossopharyngeal nerve is the ninth set of 12 cranial nerves (CN IX). It provides motor, parasympathetic and sensory information to your mouth and throat. Among its many functions, the nerve helps raise part of your throat, enabling swallowing.

Detailed explanation-4: -Cranial Nerves IX (Glossopharyngeal) and X (Vagus) This reflex is examined by touching the posterior pharynx with the soft tip of a cotton applicator and visually inspecting for elevation of the pharynx.

There is 1 question to complete.