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mars1129 [50]
4 years ago
14

Why the circulatory system is considered to be a closed system?

Biology
1 answer:
Goshia [24]4 years ago
5 0

Explanation:

human have closed circulatory system. this means blood is always enclosed in the vessels  and the heart while circulating throughout the body IN this type of system blood is pumped by heart through arteries and veins and does not fill the body cavities thats why the circulatory system is considered to be a closed system

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