The process of forming the formed elements is called erythropoiesis.

The condition of excessive numbers of red blood cells is called anemia.

Pernicious anemia is due to the lack of Vitamin B-12.

White blood cells are found in both blood and tissue fluid.

Platelets are also known as thrombocytes.

Vitamin C is needed to produce prothrombin.

Heparin, released by basophils and mast cells, helps to prevent the accidental formation of blood clots.

Individuals with type AB blood are referred to as universal donors.

Type B blood contains anti-B antibodies.

Hemolytic disease of the newborn (Rh incompatibility) is preventable.

Leukemia occurs in higher frequency in children.