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Open Vs, Closed Circulatory Systems - A Level Biology

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9 Lượt xem· 14/02/23

Gidemy High School Biology
3 Người đăng ký

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⁣Blood can flow through vessels inside the body, such as arteries and veins. This type of circulation is called closed circulation. Open circulation happens when there are no vessels to contain the blood, and it flows freely through the cavities of the body.

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