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Unformatted text preview: Bone Growth 18/02/2008 10:02:00 Proximal Epihysial Plate (Long bone) Epihysial plate o Ancors at epihysis of long bone Proliferating cartilage o Dividing chondroblasts o Contributes to growth Hypertrophic cartilage o Cells get larger o Less matrix o Stimulates calcification of hyline cartilage Chrondroblasts die Broken down by osteoclasts Dissolve collagen o Replaced by bone Diaphysis o Bone Growth o Ephiphysis grows considerably less Interstitial growth Diaphysiceal osteoclasts break down calcified cartilage Osteoblasts lay down spongy bone Chrondroblasts form cartilage matrix at proliferating cartilage region Growth in length stops when osteoclasts/blasts work faster o Chondroblasts cannot keep up with pace o Epiphysial plate closes and becomes epihysial line Appositional growth 18/02/2008 10:02:00 Growth in width Extra osteons o Osteoblasts build bone around blood vessel o Ridges fuse- periosteal ridges Becomes endostium Circumferntial lamellae...
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This note was uploaded on 04/03/2008 for the course PSIO 201 taught by Professor Stanescu during the Spring '08 term at University of Arizona- Tucson.
- Spring '08