Question

the action potential from the brain to the heart travels along which nerve(s)?
multiple choice
vagus nerve
vagus and glossopharyngeal nerves
vagus and phrenic nerves
phrenic and glossopharyngeal nerves
phrenic nerve

Explanation:

The vagus nerve is part of the parasympathetic nervous system and innervates the heart. The glossopharyngeal nerve is mainly involved in taste, swallowing, and salivation. The phrenic nerve is related to the diaphragm. Since the question is about the nerve carrying action potential from the brain to the heart, we focus on the vagus nerve.

Answer:

Vagus nerve