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Anatomy & Physiology -II BS Nursing
nmdcat.online June 6, 2026

15. The SA node (sinoatrial node) is known as the heart’s natural pacemaker because it:

A. Relays impulses to the ventricles
B. Initiates the electrical impulse for contraction
✓
C. Regulates blood pressure
D. Filters blood

📖 Additional Information

  • Relays impulses to the ventricles
  • Initiates the electrical impulse for contraction
  • Regulates blood pressure
  • Filters blood

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