Biology, asked by sumayyajaved, 7 days ago

explain structure of heart ?

Answers

Answered by ruchithack375

Explanation:

The human heart is a four-chambered muscular organ,shaped and sized roughly like a man's closed first with two-thirds of the mass to the left of midline. The heart is enclosed in a pericardial sac that is lined with the parietal layers of a serious membrane.

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