To play click on circle Back to menu ‘ Dem Bones.
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Transcript of To play click on circle Back to menu ‘ Dem Bones.
To play click on circle
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‘Dem Bones
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1 What is the central canal?
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This makes up most of the bone’s length. (Shaft)
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What is the diaphysis?
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In adults, the cavity of the shaft is called this.
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What is yellow marrow or the medullary cavity?
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This is a flat section of hyaline cartilage that causes the lengthwise growth of a long bone.
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What is the epiphyseal plate?
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What are perforating or Volkmann’s canals?
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This is a fibrous connective tissue membrane that covers and protects the diaphysis.
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What is periosteum?
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These are mature bone cells.
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What are osteocytes?
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This a complex consisting of central canal and matrix rings.
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What is an osteon or Haversian system?
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What is the epiphysis?
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This covers the external surface of the epiphyses and provides a smooth, slippery surface that decreases friction at joint surfaces.
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What is articular cartilage?
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Osteocytes are found in these tiny cavities.
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What are lacunae?
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In embryos, the skeleton is primarily made of this.
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What is hyaline cartilage?
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This is the process of bone formation.
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What is ossification?
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This is the process by which bone increase in diameter.
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What is appositional growth?
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These are activated by PTH to break down bone matrix and release Ca+ ions into the blood.
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What are osteoclasts?
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Bone are remodelled in response to which two factors?
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Calcium levels, gravity
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What is RICKETS?
This is a disease of children in which the bones fail to calcify. The bones soften and definite bowing of the legs occurs.
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This process is essential if bones are to retain normal proportions and strength during long-bone growth.
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What is bone remodeling?
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What happens when blood calcium levels are too high?
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Calcium is deposited in bone matrix as hard calcium salts
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These connect osteocytes to their nutrient supply.
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What are canaliculi?
