Intramembranous ossification follows four steps. (a) Mesenchymal cells group into clusters, and ossification centers form. (b) Secreted osteoid traps osteoblasts, which then become osteocytes. (c) Trabecular matrix and periosteum form. (d) Compact bone develops superficial to the trabecular bone, and crowded blood vessels condense into red marrow.
Cut Rita Zahara
“Intramembranous Ossification ,” Open Educational Resource (OER) - UNM, accessed February 25, 2020, http://oer.unm.ac.id/items/show/1033.