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Ronch [10]
3 years ago
6

1. What changes occur, in reference to the circulatory system, when you exercise?

Biology
1 answer:
allsm [11]3 years ago
7 0

Answer:

Exercise causes the heart to pump blood into the circulation more efficiently as a result of more forceful and efficient myocardial contractions, increased perfusion of tissues and organs with blood, and increased oxygen delivery.

Explanation:

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An atom consists of protons, electrons, and neutrons.

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