The production of erythrocytes
A) ceases if the hematocrit falls below normal.
B) is stimulated by erythropoietin.
C) is about equal to the production of white blood cells.
D) is inhibited by prothrombin.
E) occurs in bone marrow before birth and in lymph nodes after birth.

Question

Quizplus · Accepted Answer

Erythropoietin is a hormone that stimulates the production of erythrocytes (red blood cells) in the bone marrow. The production of erythrocytes does not cease if the hematocrit falls below normal, and it is not inhibited by prothrombin. The production of erythrocytes is much greater than the production of white blood cells. It occurs in the bone marrow throughout life.

The Production of Erythrocytes