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5 Written questions

5 Matching questions

  1. Bone cells (3)
  2. spinal disorder (scoliotic spine)
  3. osteon
  4. osteoclast
  5. spinal disorder (kyphotic)
  1. a thoracic curve (hunchback)
  2. b 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
  3. c bone absorbing cell

    breaks down the matrix
  4. d cylinder shaped structural unit in compact bone
  5. e curvature of the spine

5 Multiple choice questions

  1. bone formation
  2. 1. Bones grow in length at epiphyseal plate
    2. Bones grow in diameter by the combined action of osteoclasts and osteoblasts
    3. Osteoclasts enlarge the diameter of the medullary cavity
    4. Osteoblasts from the periosteum build new bone around the outside of the bone
    5. Bone formation = bone destruction in early to middle years
    6. Remodeling activity important in homeostasis of blood calcium levels.
    7. Remodeling occurs throughout life

    women stop growing around the time of the start of their period, in case they get pregnant. don't want to compete w/baby for calcium.
    males have denser bones
  3. bone forming cell
    Builds matrix
  4. 1. during bone formation osteoblasts remove calcium from blood, lowering its circulating levels
    2. when osteoclasts are active and breakdown of bone predominates, calcium is released into blood & circulating levels will increase.
  5. combined action of osteoblasts & osteoclasts to mold bones into adult shape

5 True/False questions

  1. bone tissue1. 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

          

  2. lamellainside

          

  3. medulalayers, rings, aka matrix

          

  4. interstitial growthgrowth in diameter

          

  5. Volkmann's or perforating canalsmainly blood vessels. connect central canals (ex. if one central canal gets clogged then get from here)

          

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