Answers

2016-02-09T00:03:29+08:00

HEART ---> is the main organ of the Circulatory System, it serves as the pumping machine inside our body, pumps blood from the body to theĀ lungs and vice versa.
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2016-02-11T13:21:05+08:00
It is thge main function and impoprtant organ in that system
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