Erythropoietin release is controlled by ____.

Question

Quizplus · Accepted Answer

Erythropoietin release is primarily controlled by the amount of oxygen in the blood. When oxygen levels are low, the kidneys (and to a lesser extent the liver) release erythropoietin, which stimulates the production of more red blood cells to carry oxygen to body tissues. Blood doping (choice A) involves artificially increasing the amount of red blood cells in the blood, but it does not directly affect erythropoietin release. Positive feedback (choice C) involves a self-amplifying cycle that leads to an increase in a certain process, and while it can play a role in erythropoietin release, it is not the primary control mechanism. Factors from the anterior pituitary (choice D) may play a role in regulating other aspects of blood cell production, but not erythropoietin release specifically. Plasma iron concentration (choice E) may affect the production of red blood cells, but again, it is not the primary control mechanism for erythropoietin release.

Erythropoietin Release Is Controlled by ____