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what are bone cells?
osteocytes
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trabeculae
tiny bone plates which lend strengh and support within bones
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what is the spongy bone composed of?
trabeculae
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the relatively large spaces between the trabeculae is filled with what?
red bone marrow
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hyaline cartilage
- smooth, glassy
- supports, shock, and reinforcement, cushioning
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where is hyaline cartilage found?
articulating cartilage,(ends of long bones) joins, tip of the nose and trachea, costal cartilage (ribs and sternum)
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where elastic cartilage found?
outter ear and epiglottis
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fibrocartilage
- contains chondrocytes and think collagen fibers for strength
- ability to absorb compressive shock
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where is fibrocartilage found?
- intervertebral disks
- disc of knee joints
- pubic symphysis
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the bone is a what tissue?
connective tissue that contains extracellular matrix composed of Ca++ salts plus collagen fibers
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lacuna
 small osteocyte containing-cavities found in bone tissue
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osteocytes
 mature bone cell
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central canal
- canal running through the core of each osteon
- contains small blood vessels and nerve fibers

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 canaliculi
hair like channels that connect the lacunae to each other and the central canal
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 lamella
the rings of matrix compresing the osteons of compact bone
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collagenous fibers
composed of the protein collagen and located in most connective tissues
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compact bone
although comprised of a series of osteons, it appears dense to the eye
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elastic fibers
composed of protein collagen and provide flexibility in connective tissues
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fibroblast
most common cell type in connective tissues; produces fibers and matrix
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perforating canals
canals which lie at right angles to the long axis of the bone, extending outward from the central canal
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epiphysial plate
a layer of rapidly dividing hyaline cartilage
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where is the spongy bone located?
interior of flat, short, and irregular dones and in the epiphyses of long bones
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chondriacytes
cells in cartilage
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epicondyles
raised areas on the surface of bones for ligamentous attachment
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condyles
contoured surface in epiphyses of long bones covered with articular cartilage
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