Body Fluids and CirculationHard
Question
The blood vascular system of mammals is known as double vascular system because
Options
A.A group of veins carry oxygenated and other group conduct deoxygenated blood
B.Oxygenated blood runs from heart to different organs by one set of veins while deoxygenated blood runs from heart to lung by another set
C.the two different systems never meet
D.All of the above
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