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20 Cards in this Set
- Front
- Back
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Parts of the Skeletal System
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Bones, Joints, Cartiliges, Ligaments
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Sections of the Skeletal System
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Axial Skeletal
Appendicular System |
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Functions of the Bones
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01.Support the body
02.Protection of soft organs 03.Movement due to attached Skeletal Muscles 04.Storage of Minerals and Fats 05.Blood cell Formation |
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Long Bones
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longer then wide, have a shaft with heads at the end, contain compact bone,
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Short Bones
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Generally cubed shaped, contain mostly spongly bone, examples: carples,tarsals
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Flat Bones
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Thin and flattened, usually curved, think layers of compact bone around a layer of spongy bone. Examples- Skull, Ribs, Sternum
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Irregular Bones
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Irregular shape, does not fit into other bone clasification catagories. Examples- Vertebrae-Hips
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Diaphysis
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shaft of the bone- compact bone
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Epiphysis
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Head of the bone-spongy bone
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Periostem
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covering the shaft(fibrosis connective tissue)
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Sharpey's Fibers
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holds periosteum
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Arteries
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supply bone cells with nutrients
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Articular Cartilage
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covers the external surface of the epiphyses, made of hyaline cartilage, decrease friction at this joint
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Ossify
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When cartilage turns to bone
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Medullary Cavity
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Cavity of the Shaft, contains Yellow Marrow (mostly fat) in adults, contain Red Marrow (for blood cell formation) in infants.
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Lacnae
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cavities containing bone cells, arranging in concentric ring
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Lamellae
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rings around the central cavity, sites of lacunae
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Canaliculus
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Tiny canals, radiate from the central canal to lacunae, form a transport system.
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Osteocyte
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mature bone cell
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Epiphysal Line
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When the bone is completly ossified and stops growing.
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