Categories October Surprise 2024 [FREE] Sites of hematopoiesis include all but: a) Red marrow cavities … Post author By Post date October 8, 2026 Hematopoiesis occurs in sites like red marrow, diploe of flat bones, and medullary cavities of infants, but not in the medullary cavities of a healthy adult. Thus, the answer is option d) Medullary cavities in bones of a healthy adult.