Discuss two instances where valves are important in the circulatory system

asked May 28, 2018 175k views

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4 votes

They delegate the four chambers of the heard , and open correctly so that blood can successfully flow out

Simo Salminen answered May 30, 2018

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2 votes

It deals with the heart blood and how the lungs fill the cells with oxygen for blood

Zelocalhost answered Jun 1, 2018

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