Where are red blood cells produced?

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Multiple Choice

Where are red blood cells produced?

Red blood cells are produced by hematopoiesis in the bone marrow. In adults, this happens mainly in red marrow within bones such as the pelvis, sternum, ribs, skull, and the ends of long bones. The bone marrow houses hematopoietic stem cells that differentiate into erythrocyte precursors and mature into red blood cells, with production stimulated when the body needs more oxygen-carrying cells (mediated by erythropoietin). The other options don’t describe a place where production occurs: a whole bone isn’t the site of active RBC formation, a hair shaft is unrelated to blood cell production, and attachment function has no connection to producing red blood cells.

Red blood cells are produced by hematopoiesis in the bone marrow. In adults, this happens mainly in red marrow within bones such as the pelvis, sternum, ribs, skull, and the ends of long bones. The bone marrow houses hematopoietic stem cells that differentiate into erythrocyte precursors and mature into red blood cells, with production stimulated when the body needs more oxygen-carrying cells (mediated by erythropoietin). The other options don’t describe a place where production occurs: a whole bone isn’t the site of active RBC formation, a hair shaft is unrelated to blood cell production, and attachment function has no connection to producing red blood cells.

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