SA node (sinoatrial node) is the natural pacemaker of the heart, generating impulses at 70-75/min.
The pacemaker of the heart is
NEET UG 2023 — Biology Human Physiology
2023mcqeasy
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 fibers
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