PNB 2274 Lecture Notes - Lecture 6: Perichondrium, Ultimate Tensile Strength, Osteoporosis
12 Apr 2018
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Document Summary
Cartilage- found throughout the body, semi-rigid ct, not as strong as bone but more flexible and resilient. Cell types are fibroblasts that secrete collagen i and iii, chondroblasts divide cells of cartilage and begine matrix production, the chondrocytes help maintain and sustain cartilage over time, found in lacunae. Collagen enphasized, its what keeps bones flexible and gives tensile strength, Glyco-proteins are proteins with big fuzzy sugar-chains coming off them, proteoglycan is chains of sugars with chains of proteins (even sugarier). Cartilage takes a long time to heal, not vascularized. Functions on slide, found in joints, sharks are vertebrates of mostly cartilage, our skeletons start out cartilagenous scafffold, onto which bone is deposited, keeps happening until mid-20s. 3 types of cartilage: hyaline is fairly translucent, hard to see fibers, very flexible and resilient, surrounded by perichondrium (the dense ct). This forms scaffolding for bone development: fibrocart.
