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osteoblasts: synthesis of bone tissue
osteocytes: mature bone cells
osteoclasts: breakdown of bone tissue
cartilage types (3)
fibro (collagen, thick bundles)
hyalne (collagen, thin bundles)
elastic (elastin fibers, flexible)
the condroblasts slowly die out during fetal development and the cartilage models begin to dissolve and are replaced by bone
4 bones of top of skull (and sutures)
frontal (coronal suture)
parietal (sagital suture)
occipital bone (lambolaid suture)
structure of axis
cervical (neck) 7 vertebrae
toracic (chest) 12
lumbar (lower back) 5
sacral (sacrum/ pelvis) 5 fused vertebrae
coccygeal (tailbone ) 4 fused
a flat, elastic, compressible disk, composed of a soft gelatinous center and a tough outer layer of fibrocartilage that separates neighboring vertebrae from each other
12 pairs, 2 floating
vertebro- chondral (8-10)
vertebral ribs and floating (11-12)
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