How does the heart keep the blood flowing throughout the body? It contracts and relaxes It inflates and deflates

Question

How does the heart keep the blood flowing throughout the body?

It contracts and relaxes
It inflates and deflates
It inhales and exhales
It opens and closes

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Đan Thu 5 years 2021-09-01T14:10:18+00:00 1 Answers 17 views 0

Answers ( )

  1. niczorrrr
    0
    2021-09-01T14:12:15+00:00
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    Answer:

    b

    Explanation:

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