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30 paź 2023 · Bone formation in a developing embryo begins in mesenchyme and occurs through one of two processes: either endochondral or intramembranous osteogenesis (ossification). Intramembranous ossification is characterized by the formation of bone tissue directly from mesenchyme.
- Occipital Bones
The occipital bone is an unpaired bone which covers the back...
- Parietal
Parietal bone (Os parietale) The parietal bones are...
- Phalanges
Even though the phalanges are small in size, they are...
- Occipital Bones
In long bones, bone tissue first appears in the diaphysis (middle of shaft). Chondrocytes multiply and form trebeculae. Cartilage is progressively eroded and replaced by hardened bone, extending towards the epiphysis .
The flat bones of the face, most of the cranial bones, and a good deal of the clavicles (collarbones) are formed via intramembranous ossification, while bones at the base of the skull and the long bones form via endochondral ossification.
9 kwi 2024 · Bone ossification is the formation of new bone, which can occur in two ways: intramembranous ossification and endochondral ossification. This article will discuss both forms as well as clinically relevant examples.
In the long bones of many mammals (including humans), endochondral ossification spreads outward in both directions from the center of the bone (see Figure 14.13). If all of our cartilage were turned into bone before birth, we would not grow any larger, and our bones would be only as large as the original cartilaginous model.
The epiphyseal plate is the area of growth in a long bone. It is a layer of hyaline cartilage where ossification occurs in immature bones. On the epiphyseal side of the epiphyseal plate, cartilage is formed. On the diaphyseal side, cartilage is ossified, and the diaphysis grows in length.
1 maj 2023 · Endochondral ossification begins with mesenchymal tissue transforming into a cartilage intermediate, which is later replaced by bone and forms the remainder of the axial skeleton and the long bones. Bone ossification, or osteogenesis, is the process of bone formation.