Q. 72 beats per minute heart beat rate of man is controlled by
A) SA-node
B) Ventricles
C) Purkinje fibres
D) AV-node
Explanation
SA-node controls the rate of heart beat.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.