The cranial nerve pair that decreases the heart rate is the:
A)accessory
B)trigeminal
C)trochlear
D)vagus

Question

Quizplus · Accepted Answer

The vagus nerve (cranial nerve X) is responsible for decreasing the heart rate by releasing acetylcholine, which slows the firing rate of the sinoatrial node in the heart. The accessory nerve (cranial nerve XI) controls movements of the neck and upper shoulders. The trigeminal nerve (cranial nerve V) controls sensation in the face and motor functions in the muscles of mastication (chewing). The trochlear nerve (cranial nerve IV) controls eye movement.

The Cranial Nerve Pair That Decreases the Heart Rate Is