Science, asked by kirti3300, 1 year ago

write a summary of human hart

Answers

Answered by intelligentavani

It's better to find on Google there u can get better idea

Answered by mraakash81

A healthy heart contraction happens in five stages. In the first stage (early diastole), the heart is relaxed. Then the atrium contracts (atrial systole) to push blood into the ventricle. Next, the ventricles start contracting without changing volume.

kirti3300: thanks... for the help

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