Which term describes the production of red blood cells?

• A. Erythropoiesis
• B. Leucopoiesis
• C. Thrombopoiesis
• D. Lymphopoiesis

Answer: (A)

The production of red blood cells is called erythropoiesis. It starts in the bone marrow with hematopoietic stem cells and progresses through erythroid precursor stages until mature red cells are released into circulation. This process is mainly driven by erythropoietin, a hormone produced by the kidneys in response to low oxygen, which boosts red cell production when more oxygen-carrying capacity is needed.

That term is specific to erythrocytes. Other terms refer to different blood cell lineages: leucopoiesis is the production of white blood cells, thrombopoiesis is the production of platelets, and lymphopoiesis is the production of lymphocytes.