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5 Written questions

5 Matching questions

  1. osteogenesis and ossification
  2. fact: calcified cartilage is not bone
  3. Perforating canals (Volkmann's canals)
  4. medullary cavity
  5. endochondral ossification
  1. a bone and cartilage are always distinct tissues
  2. b other bones develop as hyaline cartilage, which is replaced through this process
    - bones are: endochondral bones or cartilage replacement bones
  3. c process of bone-tissue formation
  4. d lie at right angles to the central canals and connect the blood and nerve supply of the periosteum to that of the central canals and the marrow cavity
  5. e - filled with yellow bone marrow
    - very center of the diaphysis that contains no bone tissue at all
    - aka marrow cavity

5 Multiple choice questions

  1. broken ends of the bone prodtrude through the skin
  2. like osteomalacia for kids
    - more severe than osteomalacia
    - caused by inadequate amounts of vitamin D or calcium phosphate in the diet
    - cured by drinking vitamin D-fortified milk and exposing the skin to sunlight
  3. superficial layer of dense irregular tissue--resists tension placed on a bone during bending
    - deep layer that abuts the compact bone
  4. all bones from the base of the skull down, except for the clavicles, are endochondral bones
    - begins late in the second month of development and is not completed until the skeleton stops growing in early adulthood
    - growing endochondral bones increase both in length and in width
  5. bones are well vascularized
    - 3-11% of the blood in the body is in the skeleton

5 True/False questions

  1. circumferential lamellaeoccur in the external and internal surfaces of the layer of compact bone
    - extends around the entire circumference of the diaphysis
    - resist twisting of the entire long bone


  2. proliferation zoneroughly cube-shaped
    - occur in the wrist and ankle


  3. osteoporosislow bone mass and a deterioration of the microscopic architecture of the bony skeleton
    - become porous and light
    - estrogen deficiency is strongly implicated in osteoporosis


  4. osteocyteswhen osteoblasts are completely surrounded by bone matrix and are no longer producing new osteoid
    - function to keep the bone matrix healthy
    - if osteocytes die or are destroyed, the bone matrix is resorbed


  5. Paget's diseasebones are well vascularized
    - 3-11% of the blood in the body is in the skeleton