MICROANATOMY

Detailed explanation-1: -The outer layer of a bone is called compact or cortical bone. This layer is hard and particularly solid, and it makes sure that our bones can withstand daily physical strains. The outer layer has a thin coating called the periosteum.

Detailed explanation-2: -On its outer surface, cortical bone is covered by an envelope of connective tissue, the periosteum; and on its inner surface it is covered by the endosteum.

Detailed explanation-3: -Cortical bone is the strong and compact type of bone found on the outer layer of the long bones and makes up about 80% of the skeleton. The femoral neck is made up of both cortical and trabecular bone.

Detailed explanation-4: -The outer surface of bone is called the periosteum (say: pare-ee-OSS-tee-um). It’s a thin, dense membrane that contains nerves and blood vessels that nourish the bone. The next layer is made up of compact bone. This part is smooth and very hard.