BISC 101 Lecture Notes - Osteon, Blood Vessel, Chondrocyte
12 Dec 2012
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Document Summary
Connective tissues = cellular component + larger intercellular matrix. Cell that forms new bone during growth and repair = osteoblast. Contains abundance of mineral salts, mainly calcium phosphate. Basic functional unit of compact bone = osteon or haversian system: arranged in repeating units. At the center of the osteons = haversian (central) canals that contain nutrient-providing blood vessels. Mature cartilage cells = chondrocytes: chondrocytes occur alone or in groups in spaces (lacunae) in a matrix of translucent proteins. Forms embryonic skeleton: covers ends of bones. Support and flexibility in tubes such as the trachea. Tend to contain spongy bone surrounded by a thin layer of compact bone. A layer of spongy bone between two plates of compact bone. Varying amounts of spongy and compact bone. Skull, vertebral column, thorax, bones of the middle ear, hyoid bone. Upper limbs, lower limbs, pelvic and pectoral girdles. Metaphysis region in which diaphysis and epiphysis join.
