What do you mean by heartbeat
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Posted by Ashok Sinha 7 years, 1 month ago
- 3 answers
Yogita Ingle 7 years, 1 month ago
When the heart is busy with pumping blood, the different chambers of the heart open and close, or contract and relax. Each time the chambers contract or relax, a thumping sound is produced. This is what is known as the heartbeat.
Aanya Sethi 7 years, 1 month ago
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Sh ~?Shrawni 7 years, 1 month ago
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