Question

Which structure in heart is called pacemaker?

Answer 1

The Sinoatrial Node is known as the pacemaker of the heart.

Hope this helps.

Answer 2

Hey dear,

◆ Answer -
Sinoatrial node is called the pacemaker of heart.

● Extra information -
Conducting system of heart contains two most imp nodes -
1) Sinoatrial node -
- It is located in superolateral wall of right atrium
- It gives rise to impulses which initiate heart contractions. Hence, SA node is called pacemaker of heart.
2) Atrioventricular node -
- It is located in posterior septal wall of right atrium
- It gives passes impulses go vebtricles and starts heart contractions. Hence, AV node is called pacesetter of heart.


Thanks dear..