19 Terms

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Opening in the middle of the osteon that carries a blood vessel
Central Canal
Ends of a long bone
epiphysis
Bone that is very porous and is found primarily in flat bones and the end of the long bones
Spongy Bone
A bone cell trapped in a space in compact bones
osteocyte
Bone that is very dense and is found primarily in the shaft of long bones
Compact bones
The hollow part of a long bone containing yellow marrow
Medullary Cavity
A thin layer covering epiphyseal end of a long bone to provide a surface that reduces friction in a joint
Articular cartilage
A large bone cell that reshapes and reabsorbs bone
Osteoclast
Cartilage cell
Chondrocyte
The needle- like network of spongy bone that surrounds the network of spaces
Trabeculae
The little spaces that contain osteocytes
lacunae
The basic structural unit of compact bone
osteon or haversian system
The shaft of a long bone
Diaphysis
Rings of calcified matrix in compact bone that give the bone its strength
lamellae
horizontal passageway that contains a blood vessel carrying nutrients to the osteon
Volkmans Canal or transverse canal
Tough layer of the bone
Periosteum
Thin membrane lining the medullary cavity of a long bone
Endosteum
Tiny passageways that connect the lacunae with each other and with the central canal
Canaliculi
A small bone cell that lays down a calcium matrix of bone
Osteoblast