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Vert Zoo Test 2: Ossification

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diaphysis(-es)

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Terms in this set (26)

dia-: separate/apart
-phy: growing
-sis: act of

the midsection of a long bone

epi-: upon/on

the rounded end of a long bone

metaphysis(-es)

meta-: boundary

the wide portion of a long bone between the diaphysis and epiphysis

"growth plate"

major events in ossification

A. osteoblasts in perichondrium of cartilage model produce membrane bone

B. calcification

C. vascular invasion of diaphysis region

D. vascular invasion of epiphysis

E. appositional growth

F. epiphyseal plate closure

osteoblasts in perichondrium of cartilage model produce membrane bone how?

outer layer of perichondrium = fibrous layers w/fibroblasts

inner layer of perichondrium = cambium layer w/osteoprogenitor (opr) cells <- pluripotent cells

opr cells in cambium layer of diaphysis region differentiate; osteoblasts which produce a bone "collar/sheath" for the cartilage model (thusly membrane bone)