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Circulation and Excretion › View

A human red blood cell in an artery of the left arm is on its way to deliver oxygen to a cell in the thumb. To travel from the artery to the thumb and then back to the left ventricle, how many capillary beds must this RBC flow through?

A. 4

B. 3

C. 2

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Hematology › View

Absorbance of cyanmethemoglobin determination

A. 540 nm

B. 550 nm

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