Question

The heart of a healthy man beats normally per minute

• A. 85-90 times
• B. 80-90 times
• C. 70-80 times
• D. 60-70 times

Answer 1

Answer: (C)

70-80 times

In the human heart, the sino-atrial node (SAN) can generate 70-75 beats/min and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker. Our heart normally beats 70-75 times in a minute (average 72 beats/min).

So, the correct answer is option C.