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5 Written questions

5 Matching questions

  1. osteogenesis
  2. spinal disorder (kyphotic)
  3. peri
  4. callus
  5. endochondral ossification 1/2
  1. a combined action of osteoblasts & osteoclasts to mold bones into adult shape
  2. b specialized repair tissue that binds the broken ends of the fracture together.
  3. c thoracic curve (hunchback)
  4. d around
  5. e 1. Most bones develop this process
    2. Formation of primary ossification center and marrow cavity in shaft of model
    a. Bony collar developed by osteoblasts
    b. Chondrocytes swell and die
    c. Stem cells give rise to osteoblasts and clasts
    d. Bone laid down and marrow cavity created

    epiphysis - needs to be remodeled (reshaped)
    bone grows on the outside and then an inner layer disappears by osteoclasts. this is so the bones don't get too heavy

5 Multiple choice questions

  1. bone marrow
  2. 1. Normally 8 - 12 weeks (longer in elderly)
    2. Stages of healing
    a. Fracture hematoma - clot forms, then osteogenic cells form granulation tissue
    b. Soft callus
    i. Fibroblasts produce fibers and fibrocartilage
    c. Hard callus
    i. Osteoblasts produce a bony collar in 6 weeks
    d. Remodeling in 3 to 4 months
    i. spongy bone replaced by compact bone
  3. curvature of the spine
  4. growth in diameter
  5. 1. Osteoblasts - not trapped by matrix (under endosteum or periosteum
    2. Osteocytes - trapped by matrix
    3. Osteoclasts - break down
    a. Multinucleated
    breaks down matrix thru lysosome (which breaks down enzymes)

    If you break bone you can rebuild matrix

5 True/False questions

  1. lacunaedimples, osteocyte sits in lacunae

          

  2. ossificationcylinder shaped structural unit in compact bone

          

  3. calcitonin secretionhigh blood calcium levels results in stimulation of osteoblasts and inhibit osteoclasts

          

  4. canaliculilike like little cracks, actually canals

          

  5. central canals containblood vessels, lymphatic vessels