Question

What is the full form of Sa node. Where is it located. Why it is called as pacemaker

Answer 1

Answer:

Answer:S. A. node mean sino atrial node

. It is located in heart in the right auricle.

It helps in running our heart. It is called pacemaker because it controls the heart rate by generating electrical impulses and then sending electrical signals through the heart muscle, causing the heart to contract and pump blood throughout the body.The heart beat originates from S.A. node and spreads to the walls of auricles which contract.