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katrin [286]
2 years ago
12

The heart sounds are caused by:

Health
2 answers:
Daniel [21]2 years ago
7 0
Answer is A

Explanation:

Heart sounds are created from blood flowing through the heart chambers as the cardiac valves open and close during the cardiac cycle. Vibrations of these structures from the blood flow create audible sounds — the more turbulent the blood flow, the more vibrations that get created.
Sidana [21]2 years ago
6 0

Answer:

a

Explanation:

the blood move through the chambers

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Remember that once the nervous system is complete, it cannot repair or proliferate anymore. This makes the cells in the nervous system different from all the other cells in the human body. In the case above, the infant permanently lost his ability to have a functioning facial nerve.  

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