Damage to which of the following nerves would reduce GI secretions?
A)glossopharyngeal nerve
B)hypoglossal nerve
C)vagus nerve
D)phrenic nerve

Question

Quizplus · Accepted Answer

The vagus nerve (cranial nerve X) innervates the majority of organs in the thorax and abdomen, including the digestive system. Stimulation of the vagus nerve leads to increased GI secretions, while damage to it would reduce these secretions. Damage to the glossopharyngeal nerve (A) would affect taste and swallowing, not GI secretions. Damage to the hypoglossal nerve (B) would affect tongue movement and speech, not GI secretions. Damage to the phrenic nerve (D) would affect diaphragm movement and breathing, not GI secretions.

Damage to Which of the Following Nerves Would Reduce GI