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