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the purpose of capillary tubes is to: (PICK MORE THAN ONE)

a.) reverse the flow of blood
b.) allow blood to complete a path between arteries and veins
c.) permit oxygen and nutrients to be absorbed by cells
d.) provide a means for cell wastes to enter the blood stream

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[C] Permitting oxygen and nutrients to be absorbed by cells.

The walls of capillaries are only one cell thick. This allows oxygen and other nutrients to pass through with each for the blood to use and carry to the respected parts of the body.

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