Bone Cells
medullary cavity
cavity within the shaft of the long bones filled with bone marrow
Lacunae
chambers that house mature bone cells
yellow marrow
stores fat
Osteon
structural unit of compact bone
Periosteum
A dense fibrous membrane covering the surface of bones (except at their extremities) and serving as an attachment for tendons and muscles.
Lamellae
Concentric rings made up of groups of hollow tubes of bone matrix
Volkmann's canal (perforating canal)
Connects central canals of adjacent osteons Houses artery, vein, and nerve
Epiphysis
End of a long bone
epiphyseal plate
Growth plate, made of cartilage, gradually ossifies
Compact bone
Hard, dense bone tissue that is beneath the outer membrane of a bone
Spongy bone
Layer of bone tissue having many small spaces and found just inside the layer of compact bone.
bone matrix
The extracellular material of bone tissue, including ground substance and collagen fibers. Excludes the inorganic calcium salts. Considered nonliving.
Osteoclasts
bone cells that resorb bone tissue
Osteoblasts
bone forming cells
Central canal (haversian canal)
canal that houses blood vessels located at the center of the osteon
Articular cartilage
covers the surfaces of bones where they come together to form joints
Canaliculi
little channels that connect lacunae
Osteocytes
mature bone cells
red marrow
produces red blood cells
Diaphysis
shaft of a long bone