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5 Written Questions

5 Matching Questions

  1. spinal disorder (scoliotic spine)
  2. canaliculi
  3. medula
  4. repair of fractures 2/2
  5. osteoblasts & osteoclast & calcium
  1. a curvature of the spine
  2. b 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.
  3. c 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
  4. d inside
  5. e like like little cracks, actually canals

5 Multiple Choice Questions

  1. the formation of blood cells
  2. 1. Secondary ossification centers and marrow cavities form in ends of bone
    2. Cartilage remains as articular cartilage and epiphyseal (growth) plates
    a. Growth plates provide for increase in length of bone during childhood and adolescence
    b. Disappear when growth stops
  3. growth in diameter
  4. 1. Diaphysis - shaft
    2. Epiphysis - bulby ends, where muscles attach
    3. Epiphyseal plate or disk - cartilage, plate=still growing, line=stopped growing (white line)
    4. Medullary or marrow cavity - hollow, living bone has marrow
    5. Periosteum - around the bone
    6. Endosteum - lines the cavity, inside
    7. Articular cartilage - covers head & bottom
  5. high blood calcium levels results in stimulation of osteoblasts and inhibit osteoclasts

5 True/False Questions

  1. osteoclasts stimulatesbone absorbing cell

    breaks down the matrix


  2. myelobone marrow


  3. osteogenesisno 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


  4. ossificationbone formation


  5. lamellainside


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