Question

where does the formation of red blood cell occur?

Answer 1

In the human embryo, the first site of blood formation is the yolk sac. Later in embryonic life, the liver becomes the most important red blood cell-forming organ, but it is soon succeeded by the bone marrow, which in adult life is the only source of both red blood cells and the granulocytes.

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Answer 2

in the bone narrow the process is called erythropoises. the after its life cycle destroyed in spleen