Question

write notes on working of heart of man
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Answer 1

Answer:

Explanation:It is comprised of four chambers — the right and left atrium and the right and left ventricle. The chambers of the heart work together by alternately contracting and relaxing to pump blood throughout the heart. To accomplish this, the heart uses an electrical system to trigger a heartbeat.

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Answer 2

Answer:

it will be easy for u if u serch on google .

Explanation: