If You Spin a Tube of Blood in a Centrifuge,which

Question

If you spin a tube of blood in a centrifuge,which component of the blood is the most abundant?
A) Red blood cells
B) White blood cells
C) Plasma
D) Platelets

Accepted Answer

If a tube of whole blood is spun in a centrifuge, the formed elements will separate from the plasma. Three layers are formed. Red blood cells (45% of whole blood) are the heaviest, so they settle at the very bottom of the tube. Above the red blood cells is a thin buff-colored layer of white blood cells and platelets (less than 1% of whole blood). Above this layer is the clear, straw-colored plasma (55% of whole blood).