Multiple choice general knowledge science & technology

Approximately, how any times each day do our heart valves open and close normally?

  1. 10000 times

  2. 100000 times

  3. 150000 times

  4. 200000 times
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The human heart beats approximately 72 times per minute at rest. Each beat involves the heart valves opening and closing once. Calculating: 72 beats/minute × 60 minutes/hour × 24 hours/day = 103,680 times, which rounds to approximately 100,000 times per day. This makes option B the correct answer.

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