Erythropoesis

The body must have a way to assess the concentration of erythrocytes in the blood such that erythrocytes are produced at a rate that matches the body's needs. The regulation and production of RBCs is called erythropoesis. The mechanism of erythropoesis occurs in the following way. The kidney monitors the level of oxygen in the blood. If oxygen levels are low then the kidney secretes a hormone called erythropoetin.