What hormone stimulates erythropoiesis?

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Multiple Choice

What hormone stimulates erythropoiesis?

Explanation:
Erythropoietin is the hormone that drives the production of red blood cells. When tissues become hypoxic, the kidneys release erythropoietin into the bloodstream. EPO then acts on erythroid progenitor cells in the bone marrow, promoting their survival, proliferation, and differentiation into mature red blood cells, which raises the blood’s capacity to carry oxygen. This response is tightly controlled by oxygen levels via hypoxia-sensing mechanisms; as oxygen delivery improves, EPO production falls. The other hormones listed have different primary roles—insulin supports glucose uptake and growth, thyroxine increases metabolic rate, and cortisol has glucocorticoid and metabolic effects but does not specifically stimulate erythropoiesis.

Erythropoietin is the hormone that drives the production of red blood cells. When tissues become hypoxic, the kidneys release erythropoietin into the bloodstream. EPO then acts on erythroid progenitor cells in the bone marrow, promoting their survival, proliferation, and differentiation into mature red blood cells, which raises the blood’s capacity to carry oxygen. This response is tightly controlled by oxygen levels via hypoxia-sensing mechanisms; as oxygen delivery improves, EPO production falls. The other hormones listed have different primary roles—insulin supports glucose uptake and growth, thyroxine increases metabolic rate, and cortisol has glucocorticoid and metabolic effects but does not specifically stimulate erythropoiesis.

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