Cells Of Bone

Front 1

Osteoclast

Back 1

bone resorbing cell

Front 2

osteocyte

Back 2

mature osteoblast encased in matri

Front 3

osteoblast

Back 3

bone forming cell

Front 4

properties of osteoclast

Back 4

-Large, multi nucleated, forms a sealing zone on bone that involves an actin ring
-ruffled border invovled in bone resorption through active transport of H+ ions acidfication and promotion of decalsficiation
-Collagenases promotes digestion of collagen fibers

Front 5

what is the osteoblast

Back 5

bone forming cell, prominent rer and golgi production and secretion of osteoid (col1 rich)
-located on surface of bones
-rich in ALP which is an enzyme that cleaves pyrophosphate and promotes mineralization

Front 6

what is osteocyte

Back 6

matrix encased osteoblast
found within lacunae in bone

Front 7

compact bone

Back 7

-deminieralized section
-contains haversian 9long axis in parallel) and volkman cannals with blood vessels and nerves
-bone formed in concentric rings from the outside in (osteon with HC)
-cement lines between osteons (collagen poor)
-undecalcified gorund bone section
-central haversian cancel

Front 8

spony bone

Back 8

no hc, nutrietns through diffusion
-steoblast secret osteoid onto trabculae
-large osteoclast resorbing bone (howships lacunae)

Front 9

periosteum

Back 9

protective covering on external surface of bone
-outer fibrous layer (dense irr ct)
inner cambrium alyer