OSSIFICATION & METAPHYSIS ZONES

Question 1

Intramembranous ossification

Answer 1

Produces flat bones of skull & most of clavicle.

Bone develops in fibrous sheet resmebling the dermis.

Question 2

Endochondrial ossification

Answer 2

Most bones develop this way

Bone develops from hyaline cartilage model.

Question 3

Deposition of osteoid tissue into embryonic mesenchyme.

Answer 3

Intramembranous ossification

STEP 1

Question 4

Calcification of osteoid tissue and entrapment of ostoecytes

Answer 4

Intramembranous ossification

STEP 2

Question 5

Honeycomb of spongy bone developing periostenum

Answer 5

Intramembranous ossification

STEP 3

Question 6

Filling of space to form bone @ surfaces,leaving spongy bone in middle

Answer 6

Intramembranous ossification

STEP 4

Question 7

Early cartilage model

Answer 7

Endochondral ossification

STEP 1

Question 8

Formation of primary ossification center bony collar, and periostenum.

Answer 8

Endochondral ossification

STEP 2

Question 9

Vascular invasion formation of primary marrow cavity, & appearance of secondary ossification center

Answer 9

Enochondrial ossification

STEP 3

Question 10

Bone @ birth w/ enlarged primary marrow cavity & appearance of secondary marrow cavity in one epiphysis

Answer 10

Endochondrial ossification

STEP 4

Question 11

Bone of child, w/ epiphyseal plate @ distal end.

Answer 11

Endochondrial ossification

STEP 5

Question 12

Adult bone w/ a single marrow cavity & closed epiphyseal plate.

Answer 12

Endochondrial ossification

STEP 6