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5 Written questions

5 Matching questions

  1. spinal disorder (kyphotic)
  2. Repair of fractures 1/2
  3. lacunae
  4. endochondral ossification 1/2
  5. parts of long bone (7)
  1. a dimples, osteocyte sits in lacunae
  2. b 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
  3. c thoracic curve (hunchback)
  4. d 1. Fracture tears and destroys blood vessels that carry nutrients to osteocytes
    2. Vascular damage initiates repair sequence
    3. Callus - specialized repair tissue that binds the broken ends of the fracture together
    4. Rapidly growing callus tissue effectively collars broken ends and stabilizes fracture so healing can proceed.
  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. around
  2. growth in diameter
  3. blood vessels, lymphatic vessels
  4. like like little cracks, actually canals
  5. growth in length

5 True/False questions

  1. hemopoiesisthe formation of blood cells


  2. Factors affecting bone growth (8)1. Deficiency of Vitamin A - retards bone development
    2. Deficiency of Vitamin C - results in fragile bones (collagen/fiber in connective tissue)
    3. Deficiency of Vitamin D - rickets, osteomalacia - softening of bones, vit D makes bones solid
    4. Insufficient Growth Hormone - dwarfism
    5. Excessive Growth Hormone - gigantism (beofre fusion), acromegaly (after bone fusion)
    6. Insufficient Thyroid Hormone - delays bone growth
    7. Sex Hormones - promote bone formation; stimulate ossification of epiphyseal plates
    8. Physical Stress - stimulates bone growth (b/c of remodeling)


  3. osteoclastbone forming cell
    Builds matrix


  4. spinal disorder (lordosis)thoracic curve (hunchback)


  5. osteoclasts stimulatesbone absorbing cell

    breaks down the matrix