Most compact bone is found in the shafts of long bones, this portion is usually referred to as the diaphysis. That's true, but doesn't answer the question. Hematopoiesis in adults occurs in the bone...
hematopoiesis is the formation of blood cells which happens red bone marrow. red bone marrow is found in flat bones. the sternum(a flat bone) is a major site for hematopoiesis
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