The hormone erythropoietin is released by the kidney
A) to remove old red blood cells from circulation.
B) in response to high levels of oxygen in circulation.
C) in response to low levels of hemoglobin.
D) to stimulate production of red blood cells.
E) to stimulate platelet formation.

Question

Quizplus · Accepted Answer

Erythropoietin is released by the kidney to stimulate the production of red blood cells in response to low levels of hemoglobin. This hormone acts on the bone marrow, where it stimulates the production of erythrocyte precursor cells that will eventually differentiate into mature red blood cells.

The Hormone Erythropoietin Is Released by the Kidney