Bone Cells

Longitudinal canal carrying blood vessels and nerves

haversian canal

non-living material between the rings

bone matrix

Each ring of non-living material is called a _______

lamellae

Osteocytes are found inside a smaller cavity called the ________

Lacunae

Little canals running through the matrix connecting the lacuna together from one right to to another

canaliculi

larger canals that run at right angles to the bone

Volkmanns canals

The bone matrix is made up of 50% ______ and 50% ______

Collagen, hydroxyapatite

Organic part of the bone matrix, laid down first and produced by osteablasts

collagen

inorganic molecule that makes up half of the bone matrix containing calcium and phosporus

Hydroxyapatite

mature bone cells. Maintain the proper exchanges with the blood

osteocytes

Osteocytes absorbs _____ and _____ from the blood

O2, nutrients

Osteocytes release _____ and _____ to the blood

CO2, waste

Osteocytes both release and absorb ______ depending on the situation

calcium

large multunucleated cells, break down bone matrix

osteoclasts

Process of breaking down bone

resorption

Osteoclasts release _____ to digest ______

enzymes, collagen

After the collagen is is digested, _____ is free to be sent to the osteocytes and then to the blood stream

calcium

Osteoclasts are found in the lining of ______

the medullary cavity

Condition where bones become hollow

Osteoporosis

single nucleus, manufacture collagen by protein synthesis

osteoblasts

the building of bone

deposition

osteoblasts lay down a network of ______

collagen

After building bone matrix all around themselves, osteoblasts become _____

osteocytes

Osteoblasts are found one the exterior of the bone or at the ___________

epiphyseal plate

Condition where the bone cells become infected

osteomyelitis

Enzymes released by osteoclasts to digest collagen

lysosomal enzymes