Define/Explain the following terms:
$(i)$ Open circulatory system
$(ii)$ Closed circulatory system
$(i)$ Open circulatory system
$(ii)$ Closed circulatory system
(N/A) $(i)$ In an open circulatory system,blood is pumped out of the heart into body cavities (sinuses),and the cells and tissues are directly bathed in it.
$(ii)$ In a closed circulatory system,blood is circulated throughout the body exclusively through a network of vessels,including arteries,veins,and capillaries.
$(ii)$ In a closed circulatory system,blood is circulated throughout the body exclusively through a network of vessels,including arteries,veins,and capillaries.
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