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How does the heart keep the blood flowing throughout the body? A: It contracts and relaxes B: It inflates and deflates C: It inhales and exhales D: It opens and closes
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19 votes
19 votes
How does the heart keep the blood flowing throughout the body?

A: It contracts and relaxes
B: It inflates and deflates
C: It inhales and exhales
D: It opens and closes

User Mateus
by
2.8k points

1 Answer

16 votes
16 votes
It contracts and relaxes!

Hope this helped u!!
User Mhall
by
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