Erythropoiesis requires stimulation from the hormone:

a. thrombin.

b. thrombopoietin.

c. thymosin.

d. erythropoietin.

Video transcript

Hey, everyone. Let's take a look at this question together. Erythropoiesis is primarily stimulated by the hormone erythropoetin which is produced and released by which organ is it? Answer choice. A the lungs. Answer choice. B the spleen. Answer choice C the kidneys or answer choice. D the liver. Let's work this problem out together to try to figure out which of the following answer choices is the organ that produces and releases the hormone erythropoetin. So in order to solve this question, we have to recall what we have learned about the hormone erythropoetin and where it is produced and released. And we know that erythropoetin is stimulated in response to low oxygen levels in the blood, also known as the condition hypoxia. And those low oxygen levels are detected by the kidneys. And in response to those low oxygen levels in the blood, the kidneys respond by secreting erythropoetin into the bloodstream. So it is the kidneys which produce and secrete erythropoetin. So answer choice C is the correct answer and all other answer choices are incorrect organs. I hope you found this video to be helpful. Thank you and goodbye.