MICROANATOMY

Detailed explanation-1: -These bones are called endochondral bones. In this process, the future bones are first formed as hyaline cartilage models.

Detailed explanation-2: -1. Spongy bone tissue begins to develop at sites within the membranes called centers of ossification. 2. Red bone marrow forms within the spongy bone tissue, followed by the formation of compact bone on the outside.

Detailed explanation-3: -Short bones are roughly cube shaped with vertical and horizontal dimensions approximately equal. They consist primarily of spongy bone, which is covered by a thin layer of compact bone.

Detailed explanation-4: -Secondary bone is further classified as two types: trabecular bone (also called cancellous or spongy bone) and compact bone (also called dense or cortical bone).

Detailed explanation-5: -In the last stage of prenatal bone development, the centers of the epiphyses begin to calcify. Secondary ossification centers form in the epiphyses as blood vessels and osteoblasts enter these areas and convert hyaline cartilage into spongy bone.