Question:
Which hormone stimulates red blood cell production:
Which hormone stimulates red blood cell production:
Updated On: Jul 14, 2026
- Vasopressin
- Erythropoietin
- Erythrocytin
- Prolactin
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The Correct Option is B
Approach Solution - 1
The correct option is (B): Erythropoietin.
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Approach Solution -2
The question asks which hormone stimulates the production of red blood cells. Let's check the role of each option.
- Vasopressin: Also called antidiuretic hormone, vasopressin acts on the kidneys to control how much water is reabsorbed into the blood. It regulates fluid balance, not red blood cell production.
- Erythropoietin: This hormone is made mainly by the kidneys in response to low oxygen levels in the blood. It travels to the bone marrow and signals stem cells there to produce more red blood cells, directly matching the description in the question.
- Erythrocytin: This is not an established hormone name in human physiology, and no such hormone exists as a recognized regulator of red blood cell production.
- Prolactin: Prolactin's main job is to stimulate milk production in the mammary glands after childbirth. It is not the hormone responsible for driving red blood cell formation.
Only erythropoietin has the specific, well-established job of signalling the bone marrow to make more red blood cells.
Therefore, the correct answer is Erythropoietin.
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