Question

What is sinoauricular node?

Hint:

The SA node is the natural pacemaker of the heart, responsible for setting the rhythm of the heartbeat.

Answer 1

The sinoauricular node (SA node), also known as the sinoatrial node, is a specialized group of cardiac muscle cells located in the right atrium of the heart. It acts as the natural pacemaker of the heart.
Functions:
1. It generates electrical impulses that initiate each heartbeat.
2. It controls the rhythmic contraction of the heart by regulating the heart rate.
Importance:
- The SA node ensures the heart pumps blood efficiently throughout the body.
- It maintains the normal heart rhythm, known as the sinus rhythm.