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24 Cards in this Set
- Front
- Back
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What does the skeleton support?
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soft tissues of the body
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How does the skeleton help with movement
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bones serve as levers and joints as fulcra
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What does the skeleton protect
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vital organs
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what minerals does the skeleton store
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calcium and phosphorus
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what does the skeleton function in producing
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blood cells (hemopoiesis)
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what are the 5 types of bones with examples
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1. long-femur, tibia, metatarsals
2. short-carpals, tarsals 3. flat-ribs, skull, sternum 4. sesamoid-patella |
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where do sesamoid bones develop
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in certain tendons such as the knee and foot
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what are osteocytes?
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mature bone cells
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what are osteoclasts
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cells that tear down bone
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what are osteoblasts
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cells that build new bone
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what is another term for shaft of a long bone?
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diaphysis
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what is the epiphyseal line
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where the epiphysis and the diaphysis fuse after the epiphyseal plate is no longer active
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name the layers of bone from outside in
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1. periosteum
2. compact bone 3. yellow marrow in the medullary cavity |
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what does spongy bone contain
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red marrow for producing red blood cells
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what is the structural unit of a bone
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the osteon(haversian system)
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What is the osteon composed of?
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1.Haversian canal
2. lamellae 3. lacunae 4. osteocytes 5. canaliculi |
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what is the haversian canal?
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the passage of blood vessels
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what is the lamellae
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concentric layers of bony tissue
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whatis the lacunae
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spaces containing osteocytes
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what is the canaliculi
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connections between lacunae
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what is osteoporosis
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a condition in which the bones are weak due to more resorption than deposition
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what compression fractures are most common in osteoporosis
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spine and neck of the femur
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who is at the highest risk for osteoporosis
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post menopausal women and anyone that is immobile
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what two things are needed to keep bones strong
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calcium and exercise
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