Bone Tissue Flashcards
Bone tissue is made of
Dense, supportive, connective tissue
Bone tissue contains (type of cells)
Specialized cells
Bone tissue has a (matrix)
Solid extracellular matrix with collagen fibers
The bone matrix is dense due to deposits of
Calcium salts
Calcium phosphate makes up almost
Two-thirds of bone mass
Calcium phosphate interacts with(blank) to form crystals of (blank)
Hydroxyapatite
About one-third of bone mass is
Collagen fibers
4 types of bone cells
0steosenic cells
Osteoblasts
Osteoclasts
Osteocytes
Osteogenic cells divide to produce
Osteoblasts
Osteogenic cells assist in
Fracture repair
Osteogenic cells are located in
Inner cellular layer of periosteum and in endosteum
Osteoblasts are immature cells that produce
New bone matrix during osteogenesis
0steogenisis is
Ossification
Osteoid
Matrix produced by osteoblasts that have not yet become calcified
Osteoblasts surrounded by bone matrix become
Osteocytes
Osteocytes are
Mature bone cells that do not divide
Osteocytes live
In lacunae between layers of matrix
Osteocytes have cytoplasmic extensions that pass through
Canaliculi
Osteocytes have two major functions:
Maintain protein and mineral content of matrix
Help repair damaged bone
Canaiculi
Narrow passageways that allow for exchange of nutrients, wastes and gasses
Osteoclasts absorb and remove
Bone matrix
Osteoclasts are
Large multinucleate cells
Osteoclasts secrete
Acids and protein-digesting enzymes
Osteolysis
Dissolved bone matrix and released stored minerals
