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COMPARATIVE VERTEBRATE ANATOMY OF SKELETAL SYSTEM

COMPARATIVE VERTEBRATE ANATOMY OF SKELETAL SYSTEM. BONE. Inorganic components -60% of the dry weight Organic component -Primarily collagen. FUNCTIONS:. Support Movement Protection Storage Blood-cell Production.

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COMPARATIVE VERTEBRATE ANATOMY OF SKELETAL SYSTEM

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  1. COMPARATIVE VERTEBRATE ANATOMY OF SKELETAL SYSTEM

  2. BONE Inorganic components -60% of the dry weight Organic component -Primarily collagen

  3. FUNCTIONS: Support Movement Protection Storage Blood-cell Production

  4. 2 basic structural types of bone: Compact Bone - forms the outer shell of all bones and also the shafts in long bones Spongy Bone - found at the expanded heads of long bones and fills most irregular bones

  5. Bone Formation -Begins with a blastema -These cells develop FIBROBLASTS or OSTEOBLASTS Fibroblasts -form collagen Osteoblasts -form bone cells.

  6. Ossification Intramembranous Ossification -Membrane bone formation Ex. Lower Jaw, Skull, etc. Endochondral Ossification -Replacement of Bone

  7. Skeletal elements: Dermal skeleton -skin of most living vertebrates Endoskeleton Somatic - Axial and Appendicular Skeleton Visceral - cartilage or bone associated with gills & skeletal elements (such as jaw cartilages) derived from them.

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