2026 Re-NEET Body Fluids and CirculationCardiac cycle - SA node Easy Question 3 of 83 in Body Fluids and Circulation

The number of action potentials generated by sino-atrial node (SAN) in a healthy human is _______ per minute.

A 28 - 30
B 70 - 75
C 100 - 110
D 120 - 140

The answer is B.

Solution

Reference: NCERT Class XI, page 199.

Concept Cardiac cycle - SA node

Body Fluids and Circulation in past papers

83 questions from this chapter have appeared across 27 exam years.