Conversion of mesenchymal tissue in the fontanelles (soft spots) of an infant's skull to tissue is apositional growth endochondral ossification intramembranous ossification
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Mesenchymal cells in the center of a sheet of fibrous connective tissue developing into osteoblasts describes: appositional growth longitudinal growth Intramembranous ossification endochondral ossification
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In this type of ossification mesenchymal cells in the embryonic skeleton gather together and begin to differentiate into specialized cells that form a template of the future bone. Ossification of flat bones begins as mesenchymal cells form a template of the future bone. They then differentiate into osteoblasts at the ossification center. Osteoblasts secrete the extracellular matrix and deposit calcium, which hardens the matrix. The non-mineralized portion of the bone or osteoid continues to form around blood vessels, forming spongy bone. Connective tissue in the matrix differentiates into red bone marrow in the fetus. The spongy bone is remodeled into a thin layer of compact bone on the surface of the spongy bone. The process depicted in the description above is (check all that apply): intermembranous ossification endomembrane ossification intramembranous ossification red bone marrow formation
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