Answer
Step One: Development of Ossification Center-Osteoblasts secrete organic extracellular matrix
Step Two: Calcification-Calcium and other mineral salts are deposited and extracellular matrix calcifies (hardens).
Step Three: Formation of Trabeculae-Extracellular matrix develops into trabeculae that fuse to form spongy bone
Step Four: Development of the Periosteum-Mesenchyme at the periphery of the bone develops into the periosteum.
The flat bones of the skull and parts of the mandible and clavicle are formed by Intramembranous Ossification
Work Step by Step
Intramembranous Ossification Pg 208-209
