Of osteoclasts o bone lining the marrow cavity is

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Unformatted text preview: o prevent collapse of trachea • Flexible • Starting point for synthesis of bone o Determination of age  A young animal will have more cartilage  Used by packing graders – look for full ossification (indicates older animal) o Intramembranosis and endocrono (requires cartilage template) bone formation • Synthesized by chondrocytes o Both chondrocytes and osteocytes are derived from mesenchyme cells o Undergo Mitosis to reproduce  Matrix is made up of collagen embedded in glycoprotein (similar to bone) Types: Differs from bone in: • Softness – softer than bone • Flexibility – more flexible than more • Resilience – more resilient than bone • Ability to regenerate – bone is better at regeneration Postnatal Growth:  ­process allows bone to get longer as animal grows • Occurs at site of long bone –epiphyseal plate (tibia or femur) 6 • • • • • • 2 areas of cartilage: o Region between the epiphysis and diaphysis  Epiphyseal (or growth plates) – site where bone increases in length • Will become ossified once completely grown o At both ends of articular cartilage Cartilage cells create new cartilage on the epiphyseal side of the epiphyseal plate Osteoblasts replace cartilage with bone on the diaphyseal side of epiphyseal plate Not much effect on articular surface Growth of bone diameter – bone deposited under periosteum o Bone added to outer surface Increase in size of medullary cavity due to action of osteoclasts o Bone lining the marrow cavity is destroyed to increase size of cavity...
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This note was uploaded on 06/29/2013 for the course ANSC 2340 taught by Professor Iramandell during the Winter '12 term at University of Guelph.

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