ANA300Y1 Lecture Notes - Lecture 7: Intramembranous Ossification, Bone Remodeling, Ossification Center
Document Summary
The osteon is the that compact bone is organized, how we can end up with dense concentration of matrix. It causes compressional strength from running parallel to long axis. As cells surround themselves with matrix, they leave a little space for cell processes to exist in, known as canaliculi. Canaliculi allow for cells processes to meet with one another communicating through gap junctions. Creates little tunnels that join to the central canal. Allows for movement of material and nutrients from veins, arteries and nerves to reach remote cells away from central canal. Matrix strengthened by alternating orientation of collagen fibers. Compact bone forms the cortex of all bone. Bone matrix forms trabeculae (chocolate part of an aero bar) but is lamellated with matrix again. Again there are lacunae within there again except there are not osteons and central canal. There are canaliculi that join the cells of deeper layers and more superficial layers.
