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5 Written questions

5 Matching questions

  1. Bone cells (3)
  2. spinal disorder (lordosis)
  3. medula
  4. osteoporosis
  5. calcitonin secretion
  1. a high blood calcium levels results in stimulation of osteoblasts and inhibit osteoclasts
  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 inside
  4. d exaggerated lumbar curve
  5. e no calcium. deterioration of vertebral support.

    1. Bones lose mass and become increasingly brittle and subject to fractures
    2. More prevalent in women - postmenopausal
    3. Men develop later in life - senile

    genetics, diet & exercise

5 Multiple choice questions

  1. cylinder shaped structural unit in compact bone
  2. 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
  3. growth in length
  4. bone marrow
  5. helps the bone not be so heavy. Line up the points of stress, not across.

    1. Sponge like appearance formed by plates of bone called trabeculae
    2. Trabeculae have few osteons or central canals
    - No osteocyte is far from blood of bone marrow
    3. Provides strength with little weight
    - Trabeculae develop along bone's lines of stress

5 True/False questions

  1. spinal disorder (kyphotic)exaggerated lumbar curve

          

  2. hemopoiesisno calcium. deterioration of vertebral support.

    1. Bones lose mass and become increasingly brittle and subject to fractures
    2. More prevalent in women - postmenopausal
    3. Men develop later in life - senile

    genetics, diet & exercise

          

  3. 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

          

  4. osteocytebone cell (mature bone cells)

    Maintains matrix

          

  5. Volkmann's or perforating canalsblood vessels, lymphatic vessels