When Do Secondary Ossification Centers Appear?

Most secondary ossification centers appear after birth, and in long bones they correspond to the epiphyses. As mentioned in Section 1.3. 1, between the diaphysis and the epiphyses lies a cartilaginous layer, the growth plate, which allows the bones to grow in length.

Where do secondary ossification centers occur?

Secondary ossification centers occur in the epiphyses (option C). Secondary ossification occurs after the primary ossification of osteogenesis. The primary center of ossification normally starts in utero by two to three months.

Where is the secondary ossification center located and when does it form?

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.

Alexander Ross

Alexander Ross

Gaming, Esports & Interactive Media Writer

Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.