The SA (sinoatrial) node is called the pacemaker of the heart as it generates impulses that initiate each cardiac cycle.
The pacemaker of the heart is:
NEET UG 2026 — Biology Human Physiology
2026mcqeasy
The pacemaker of the heart is:
Official previous-year question
Verified 30 May 2026.
Options
- A
AV node
- B
SA node
- C
Bundle of His
- D
Purkinje fibres
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