BIOL 207 Lecture Notes - Lecture 9: Hyaline Cartilage, Apposition, Chondrocyte
21 Oct 2016
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Document Summary
Lacunae: scattered depressions that house chondrocytes: can endure great stress due to being 80% water, avascular (no blood vessels); surrounding perichondrium (dense irregular ct) is vascularized, chondroblasts, chondrocytes. Cartilage (connective tissue: cell types, characteristics, fibers, growth, collagenous, elastic, apposition: adding on or placing together, appositional growth: growth by the addition of new layers onto those previously formed. Most widely distributed cartilage in the body. Found: in most embryonic skeleton, at end of long bones, covering ends of long bones, tip of nose, connects ribs to sternum (costal cartilage, 8/9 cartilages in larynx and trachea. Epiphyseal (growth) plates until ossified when a person is fully grown: fibrocartilage. Structurally between hyaline and dense regular connective tissue. Very compressionable and resist tension very well. Epiglottis of larynx: living: cells: osteoblasts, osteocytes, osteoclasts, nonliving: osteoid: 1/3 of matrix. Composition of bone (connective tissue: organic (35%, inorganic (65%)
