SA node generates electrical impulses initiating each heartbeat, hence called the pacemaker.
Back to NEET UG 2026 Human Physiology
NEET UG 2026 — Biology Human Physiology
easy
mcq
2026
Official previous-year question
Verified 30 May 2026.
Question
The pacemaker of the heart is:
Options
- A
AV node
- B
SA node
- C
Bundle of His
- D
Purkinje fibres
Solution
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