Ossification, the formation of the bony skeleton, begins prenatally and continue

Question

Ossification, the formation of the bony skeleton, begins prenatally and continues after birth. There are two general mechanisms for how bones form: intramembranous ossification and endochondral ossification Sort the phrases into the appropriate bins depending on which type of ossification they describe. If a phrase applies to both types of ossification, drag it to the green "both bin. Reset Help bone forms from fibrous membrane osteoblasts deposit bone matrix ) resulting bone contains spongy bone forms the cranial bones sandwiched between compact bone primitive bone tissue is infiltrated by blood vessels growth ends when epiphyseal plate closes occurs simultaneously as interstitial bone growth intramembranous both endochondral bone forms from cartilage model bone develops from ossification centers forms the majority of the bones of the body

Explanation / Answer

Intramembranous ossification:

1. Bone develops from ossification centres.

2. Forms the cranial bones like parietal, frontal, squamous temporal and squamous part occipital bone.

3. Bones form from fibranous membrane.

4. Resulting bone contains spongy bone sandwiched between compact bone. Example: Flat bones - parietal and frontal

5. Osteoblasts deposit bone matrix

6. Primitive bone tissue is infiltrated by blood vessels.

Both : 1. Forms the cranial bones.

2. Resulting bone contains some bone sandwiched between compact bone.

3. Osteoblasts deposit bone matrix.

Endochondral ossification:

1. Bone forms from cartilage model.

2. Forms the majority of the bones of the body.

3. Forms the cranial bones like basilar and lateral portions of the occipital, sphenoid, ethmoid and the petrous and mastoid part of the temporal bone.

4. Resulting bone contains spongy bone sandwiched between compact bone. Example : Flat bones - Occipital

5. Occurs simultaneously as interstitial bone growth.

6. Osteoblasts deposit bone matrix.

7. Growth ends when epiphyseal plate closes.

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