What is the Function of Buffy Layer in Blood?

What is the role of the buffy coat in whole blood?

A. Contains red blood cells

B. Consists of leukocytes and platelets

C. Made up of blood proteins

D. None of the above

Answer:

The correct answer is B. Consists of leukocytes and platelets

The buffy coat serves an important function in whole blood. It is a thin layer in centrifuged blood that consists of leukocytes (white blood cells) and platelets, which are essential for immune responses and blood clotting processes.

When blood is centrifuged, it separates into three layers: red blood cells settle at the bottom, the buffy coat forms in the middle, and the liquid plasma rises to the top. The buffy coat is lighter than the red blood cells but heavier than the plasma, making it a distinct layer in the blood sample.

Leukocytes play a crucial role in the body's immune response by defending against infections and diseases. Platelets are important for blood clotting, preventing excessive bleeding when there is an injury. The presence of leukocytes and platelets in the buffy coat makes it a critical component of whole blood.