Question

question no. 7 to 9 plz it's urgent

Answer 1

Ans-7 A circulatory system in which the blood travels twice through the heart in one complete cycle of the body is called double circulation. It is necessary to supply oxygenated blood to the whole body and then to get deoxygenated blood reoxygenated in the lungs.

Ans-9 Haemodialysis is also known as kidney dialysis or simply dialysis, is a process of purifying the blood of a person whose kidneys are not working normally.


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