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hoa [83]
3 years ago
13

The beating sound your heart makes comes from:

Health
2 answers:
Fofino [41]3 years ago
5 0

Answer:

B) Valves closing

Explanation:

A healthy heart makes a lub-dub sound with each beat. This sound comes from the valves shutting on the blood inside the heart. The first sound (the lub) happens when the mitral and tricuspid valves close.

Sindrei [870]3 years ago
3 0
The answer is B. It is the only answer that make sense here.
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