The sites of active red marrow differ for adults and young children. Which one site is active in children but not in adults?

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Quizplus · Accepted Answer

In young children, the distal ends of the long bones are sites of active red marrow, which is involved in the production of blood cells. In adults, red marrow is primarily found in the pelvis, vertebrae, sternum, and ribs, while the long bones' distal ends mostly contain yellow marrow, which is primarily fat.

The Sites of Active Red Marrow Differ for Adults and Young