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5 Written questions

5 Matching questions

  1. Bone cells (3)
  2. sinus
  3. osteoclast
  4. central or Haversian canal
  5. Cancellous or spongy bone (3)
  1. a blood vessels, lymphatic vessels
  2. b bone absorbing cell

    breaks down the matrix
  3. c 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
  4. d air pocket in the bone
  5. e 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 Multiple choice questions

  1. curvature of the spine
  2. thoracic curve (hunchback)
  3. connective tissue
    1. Matrix dominates (calcium, calcium phosphate, sodium...)
    2. Inorganic salt - hydroxyapatite
    calcium phosphate (gives bones hardness)
    3. Organic matrix - protein fibers = gives you flexibility

    Note 1: need both organic and inorganic btw cells.
    Note 2: if calcium phosphate is the only thing in the bones then brittle bones and they shattered.
    Note 3: is only organic then osteoporosis
  4. bone cell (mature bone cells)

    Maintains matrix
  5. 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 True/False questions

  1. appositional growthgrowth in length

          

  2. ossificationbone formation

          

  3. osteoncylinder shaped structural unit in compact bone

          

  4. parts of long bone (7)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. medulainside