Skeletal System
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| made of organs called _____ | bones
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| number of adult bones | 206
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| number of Infant bones | 350
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| number of bones total | 206
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| Axial skeleton (main_____)consists of:(4) | Main trunkconsists of:SkullVertebrebral columnribs and sternumhyoid bone
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| Appendicular skeleton (extremities/______)Cosists of: (2) | (pelvic and shoulder girdles)consists of:1. upper extremities2. lower extremities
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| number of Auditory ossicles | 6
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| Functions of Skeletal system(5) | 1.framework-for muscles,fat,and skin2.protection-internal structures3.production-blood cells=henatopoiesis or homopoiesis; RBCs, WBCs, platelets4.storage-calcium, phosphorus and fat5.levers-muscle attatchs to hones to assist in movement
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| bones of extremities=_____ | long bones
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| diaphysis | long shaft
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| epiphysis | ends of bone
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| red marrow (found in) (produces) | found in epiphysisproduces RBCs, plt, and some WBCsuse for dx procedures
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| Medullarty canal/cavity (inside the _____) (filled with ____) | inside the diaphysisfilled with yellow marrow
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| endosteumlines ______ canalkeeps ______ marrow intactProduces some _____ | line the medullary canalkeeps the yellow marrow intactproduces some bone growth
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| Red Marrowfound in certian bones (5)function: | found in vertebrae, ribs, sturnum, cranium, proximal ends of humerous and femurfunction: produces RBCs, Thrombocytes, WBCsimportant in manufacture of blood cells and immune system
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| Periosteumoutside of ____; tough____necessary for______ and ______contains: ______ | outside or bone; tough membranenecessary for bone growth and repair, nutritioncontains blood vessels
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| osteoblasts-cells that _____osteoclasts_cells that _____ | osteoblasts-cells that form new bone tissueosteoclasts-cells that break down bown
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| articular cartilage-______"_____ absorber" | Articular cartilage-thin layer that covers the epiphysis"Shock absorber"
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| Skull composed of (2) bones | cranial bonesfacial bones
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| Cranium-Sheprical ________number of bones: | Cranium-sheprical structure that surrounds and protects the brain;8 bones;1 frontal;2 parietal;2 temporal;1 occipital (back of the head)1 ethmoid (separates nasal cavity from the brain)1 sphenoid
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| number of facial bones | 14 total; 1 mandible (lower jaw), 2 maxilla (upper jaw), 2 zygomatic (cheek), 2 lacrimal (inner aspect of eyes), 5 nasal (upper part of nose), 2 palatine (roof of mouth)
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| sutures | areas where the cranial bones have joined together
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| sinuses | air spaces in the bones of the skull act as resonating chambers for the voice
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| foramina | openings in bones that allow nerves and blood vessels to enter or leave the bone
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| fontnels | "soft spots"
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| spinal column #__ bones | 26
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| functios of vertebrae (2) | protect spinal cord, provide support for head and trunk
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sarah_thomas
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