Multiple choice general knowledge science & technology

The beating sound of the heart is created by valves opening and closing.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The heart sounds ('lub-dub') are created by the heart valves closing. The first sound (lub) comes from the mitral and tricuspid valves closing, and the second sound (dub) comes from the aortic and pulmonary valves closing. The correct answer is True.

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