# Which cranial nerve is tested by hoarseness and muscle response after saying “Ah”?

 # Which cranial nerve is tested by hoarseness and muscle response after saying “Ah”? 

a. Glossopharyngeal. 

b. Trigeminal. 

c. Vagus. 

d. Hypoglossal.

The correct answer is C. Vagus.

Testing the glossopharyngeal nerve includes placing a sweet or salty substance on the posterior one third of tongue. To test the trigeminal nerve, the patient is asked to bite down and to touch his/her face. Muscles responses after saying “Ah” hoarseness are test for the vagus nerve. Tongue protrusion is used to test the hypoglossal nerve.

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