Repair for Fractures/ Bone Growth

The fetal skeleton is made of what?

Where is the primary site of endochondral ossification?

The replacement of cartilage by bone by osteoblasts

Bone cells which build bone

The secondary site of ossification begins where?

When a large blood clot forms from ruptured blood vessels in the bone

The hemotoma is gradually replaced with fibrocartilage. This ties two fragments together.

The oseteoblasts replace fibrocartilage with the trabeculae of spongy bone

Osteoblasts absorb the spongy bone and create a new meduliary cavity, as osteoblasts lay down compact bone