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21 Cards in this Set
- Front
- Back
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cartiliges in body
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hyaline,elastic,costal,epiglottis,cartilages of repiratory tubes
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perichondrium
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girdle of dense connective tissue surrounding cartilage
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resiliency of cartilage
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water squeezed out of its' matrix rushes back in as compression eases causing it to spring back
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most common type of cartilage
(and its' matrix?) |
hyaline and its' matrix is fine collagen fibrils.
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elastic cartilage
(and its' matrix?) |
fine collagen fibrils & also contains elastic fibers(more pliable)
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fibrocartilage
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contains thick collagen fibers that can resist compression and extreme tension
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function of bones
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protect,support soft organs,serve as levers for muscles to pull on,store calcium,contain bone marrow that makes blood cells.
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classification of bones
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long,short,flat and irregular
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enternal/internal bone
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compact/spongy
spongy bone trabeculaearranged in networks |
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anatomy of a long bone
shaft,end,covering of outer/inner surface |
shaft/diaphysis
end/epiphysis periosteum/endosteum |
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vascularization of long bones
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epiphyseal vessels serve epiphysis
nutrient vessels serve diaphysis(bone marrow occurs w/in spongy bone & cental medullary(marrow)cavity |
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how are the trabeculae of spongy bone arranged?
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along the dominant lines of stress experienced by the bone
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microscopic structure of compact bone
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osteon-pillar consisting of a central canal surrounded by concentric lamellae.Osteocytes,embedded in lacunae,are connected to each other and to central canal by canaliculi
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bone lamellae
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concentric tubes of bone matrix,collagen fibers in adjacent lamellae run in roughly opposite directions(this gives strength in resisting torsion)
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bone cells
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osteoblasts &osteocytes make bone, osteoclasts remodel & repair bone
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most bones develop from...
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hyaline cartilage in the late embryonic period
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primary ossification/secondary ossification center
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diaphysis/epiphysis
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endochondral bones lengthen until the...
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epiphyseal plate closes in early adulthood
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bones increase in width due to
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appositional width
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bone remodeling
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new bone tissue deposited and reabsorbed in response to hormonal & mechanical stimuli
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osteoid
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secreted by osteoblasts at areas of bone deposit. Calcium salt is then deposited in the osteoid
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