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10. What is happening internally when you hear a heartbeat?

two sets of heart valves closing

the heart muscle exerting itself

blood clotting within the heart

blood traveling through your body

User Jaquan
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2 Answers

2 votes

Answer:

The answer is number 1.

Step-by-step explanation:

Hope this helps!!

User Chandan Kumar
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1 vote

Answer:

two sets of heart valves closing

User Micha Schwab
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