lamellar bone

The inner layer of the scale is made of lamellar bone.

Cosmoid scales increase in size through the growth of the lamellar bone layer.

This is associated with accelerated deposition of lamellar bone in a disorganized fashion.

This new lamellar bone is in the form of trabecular bone.

Compared to woven bone, lamellar bone formation takes place more slowly.

The osteoblasts form new lamellar bone upon the recently exposed surface of the mineralized matrix.

Eventually, woven bone is replaced by lamellar bone.

The lamellar bone begins forming soon after the collagen matrix of either tissue becomes mineralized.

The bone collar is eventually mineralized and lamellar bone is formed.

Lamellar bone also requires a relatively flat surface to lay the collagen fibers in parallel or concentric layers.

"Note the flaking and peeling in some of the long bones, where circumferential lamellar bone has natural cleavage lines.

The next phase is the replacement of the hyaline cartilage and woven bone with lamellar bone.

After a fracture, woven bone forms initially and is gradually replaced by lamellar bone during a process known as "bony substitution."

It is soon replaced by lamellar bone, which is highly organized in concentric sheets with a much lower proportion of osteocytes to surrounding tissue.

Woven bone is produced when osteoblasts produce osteoid rapidly, which occurs initially in all fetal bones (but is later replaced by more resilient lamellar bone).

They are composed of a layer of dense, lamellar bone called isopedine, above which is a layer of spongy bone supplied with blood vessels.

After this resolves, the periosteum remains thickened, and subperiosteal immature lamellar bone can be seen on biopsy, while the bone marrow spaces contain vascular fibrous tissue.

The scales of sarcopterygians are true scaloids, consisting of lamellar bone surronded by layers of vascular bone, dentine-like cosmine, and external keratin.

Osseous choristoma of the tongue is a condition characterized by a nodule on the dorsum of the tongue containing mature lamellar bone without osteoblastic or osteoclastic activity.

Layered lamellar bone makes up most of the neural spine's cross-sectional area, and contains lines of arrested growth that can be used to determine the age of each individual at death.

Substitution of the woven bone with lamellar bone precedes the substitution of the hyaline cartilage with lamellar bone.

Elasmoid scales are thin, imbricated scales composed of a layer of dense, lamellar bone called isopedine, above which is a layer of tubercles usually composed of bone, as in Eusthenopteron.

Lamellar bone, which makes its first appearance in the fetus during the third trimester, is stronger and filled with many collagen fibers parallel to other fibers in the same layer (these parallel columns are called osteons).