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1693. Parasympathetic stimulation of heart causes______________?

September 27, 2025 by Admin

A. SA node decreases firing

B. Increased AV node excitability

C. Decreased ventricular contraction

D. Tachycardia

✅ The correct answer is option A. SA node decreases firing.

Categories Medical, Physiology Mcqs Tags Medical, Physiology Mcqs

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