Q. The function of vagus nerve innervating the heart is to
A) Initiate the heart beat
B) Reduce the heart beat
C) Accelerate the heart beat
D) Maintain constant heart beat
Explanation
The vagus nerves (parasympathetic) supply mainly the SA and AV-node and atrial muscles. The parasympathetic stimulation reduces the rate at which impulses are produced, decreasing the rate and force of the heart beat.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.