First slide

Blood

Question

Select the correct statement about blood platelets.

Easy

A

They are produced from megakaryocytes in the bone marrow
B

An increase in their number can lead to failure of blood clotting
C

They are the most abundant of all the formed elements in the blood
D

They are nucleated complete cells

Solution

Blood platelets are produced by the fragmentation of megakaryocytes in the bone marrow. A decrease in their number can lead to failure of blood clotting (thrombocytopenia). RBCs are the most abundant formed elements in the blood. Platelets are cell fragments and their nucleus undergo degeneration during the fragmentation of megakaryocytes.

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