Question

Explain how the development of intramembranous bone differs from that of endochondral bone.

Answer 1

ANSWER:

The Intra-membranous bones develop from sheet-like masses of connective tissue unlike the Endochondral bones which develop from masses of hyaline cartilage with shapes similar to the future bone structures.

EXPLANATION:

• Osteoblast cells develop due to the enlargement and differentiation of the primitive connective tissue.

• This produces the spongy bone tissue in all directions. The outer layer of cells of the developing bone forms the periosteum which develops into connective tissues encircling the developing diaphysis.

• This is followed by the formation of the primary ossification center followed by the secondary ossification centers resulting in the formation of the spongy bone.