Question

Approximately how many times does the human heart beat over an average lifetime?

1) 30 billion
2) 3 billion
3) 3 million
4) 300 million
5) 30 million

Answer 1

The human heart will beat nearly 3 billion times in an average 75-year lifespan. Hence, the correct option is Option 2: 3 billion.

Step-by-step explanation:

The question asks about the number of times the human heart beats over an average lifetime. Using an average heart rate of 75 beats per minute, the human heart would beat approximately 108,000 times in a day and over 39 million times in a year.

If we estimate an average lifespan of 75 years, the total number of heartbeats would be nearly 3 billion. Therefore, the correct answer to the student's question is Option 2: 3 billion. This illustrates the heart's impressive capacity for work over a human lifespan, further highlighted by the volume of blood it pumps, which can total up to 2.6 million gallons or 10 million liters over the same timeframe.