trabecula

Examples of trabecula in the following topics:

• Embryonic and Fetal Bone Formation

  • The first step in the process is the formation of bone spicules (aggregates of bony matrix) that eventually fuse with each other and become trabeculae.
  • The periosteum is formed and bone growth continues at the surface of trabeculae.
  • Much like spicules, the increasing growth of trabeculae result in interconnection, and this network is called woven bone.
  • As growth continues, trabeculae become interconnected and woven bone is formed.

• Development of the Skeleton

  • Osteoblasts add layers of fresh bone to the trabeculae.
  • Osteoblasts, differentiated from the osteoprogenitor cells that entered the cavity via the periosteal bud, use the calcified matrix as a scaffold and begin to secrete osteoid, which forms the bone trabecula.

• Stages of Bone Development

• Exercise and Bone Tissue

  • The internal architecture of the trabeculae undergoes adaptive changes, followed by secondary changes to the external cortical portion of the bone, perhaps becoming thicker as a result.

• Body Cavity Membranes

  • In the region of the brain, particularly, a large number of fine filaments called arachnoid trabeculae pass from the arachnoid through the subarachnoid space to blend with the tissue of the pia mater.

• Meninges

  • In the region of the brain, particularly, a large number of fine filaments called arachnoid trabeculae pass from the arachnoid through the subarachnoid space to blend with the tissue of the pia mater.