Describe events during cartilage model formation

12. Describe events during cartilage model formation . Include
each of the following:
a. nutrient artery penetration - The cartilage model formation if
c. Contrast the perichondrium and the periosteum

13. Describe (step 2) growth of the cartilage model . Include each
of the following:
The cells of perichondrium transform to osteoblasts and blood
vessels matured around the cartilage.
14. Describe (step 3) bone collar and periosteum formation .
15. Describe (step 4) primary ossification center formation .
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