Question

explain the pumping action in human heart ?
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Answer 1

Answer:

There are two phases to your heart's pumping cycle: systole - this is when your heart contracts, pushing blood out of the chambers. diastole - this is the period between contractions when the muscle of your heart (myocardium) relaxes and the chambers fill with blood.

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Answer 2

Answer:

The myocardium does the main pumping work: It relaxes to fill with blood and then squeezes (contracts) to pump the blood. "Contractility" describes how well the heart muscle squeezes. After pumping, your heart relaxes and fills with blood.

Explanation:

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