alvirakhan alvirakhan

15-03-2019
Biology

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explain the structure of heart

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140hadkhoj 140hadkhoj

22-09-2019

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

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