Biomed 100 Practice Quiz
Chapter 12, Spring 2007
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Multiple Choice - One Correct Choice Per Question
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  1. The formed elements of blood are...
    1. red blood cells, platelets and plasma
    2. red blood cells, white blood cells, and platelets
      3.
    3. red blood cells, white blood cells, and plasma proteins
    4. white blood cells, platelets, and lymphocytes
    5. white blood cells, platelets, and plasma proteins

  2. Red blood cells are...
    1. relatively large cells with multiple nuclei
    2. convex on one side and concave on the other
    3. irregularly shaped fragments without a nucleus
    4. irregularly shaped fragments with a round nucleus
    5. disks, concave on both sides, that carry hemoglobin
      6.

  3. The primary function of erythrocytes is...
    1. coagulation
    2. gas exchange
      3.
    3. phagocytosis
    4. detection of antigens
    5. production of antibodies

  4. Old or damaged red blood cells are destroyed by _?_ in the _?_.
    1. platelets / spleen
    2. stem cells / bone marrow
    3. neutrophils / lungs
    4. lymphocytes / thymus
    5. macrophages / liver and spleen
      6.

  5. Following destruction of red blood cells, hemoglobin is decomposed into _?_ and _?_.
    1. oxygen and carbon dioxide
    2. platelets and oxygen
    3. erythrocytes and macrophages
    4. iron and bile salts
    5. iron and bile pigments (biliverdin, etc.)

  6. The production of red cells is dependent on adequate intake of mainly...
    1. zinc and vitamin E
    2. iron and vitamin B12
      3.
    3. copper and vitamin K
    4. folic acid and vitamin C

  7. Lymphocytes are...
    1. small macrophages
    2. leukocytes that do contain granules
    3. leukocytes that do not contain granules
      4.
    4. neutrophils that do not contain granules
    5. erythrocytes that do not contain hemoglobin

  8. The most numerous of the white blood cells are the _?_, the function of which is to _?_.
    1. lymphocytes / destroy bacteria by phagocytosis
    2. neutrophils / destroy bacteria by phagocytosis
      3.
    3. lymphocytes / provide immunity against specific antigens
    4. neutrophils / provide immunity against specific antigens
    5. monocytes / become macrophages which engage in phagocytosis

  9. Which one of the following is true?
    1. Macrophages are cells capable of ingesting and destroying foreign particles and debris in the body.
      2.
    2. The source or origin of macrophages within the body is not presently known.
    3. Both of the above are true.
    4. None of the above are true.

  10. The white blood cell count, in cells per cubic millimeter of blood, is...
    1. approximately one half the red blood cell count
    2. likely to rise temporarily during infections
      3.
    3. both of the above
    4. none of the above

  11. Blood plasma consists mainly of water and...
    1. protein
      2.
    2. collagen
    3. platelets
    4. electrolytes

  12. Platelet plug formation is promoted by exposure of platelets to all of the following except...
    1. antigens
      2.
    2. collagen
    3. rough surfaces
    4. previously activated platelets

  13. Most of the plasma proteins, including clotting factors such as fibrinogen and prothrombin, are produced in...
    1. bone marrow
    2. the liver
      3.
    3. the thymus
    4. the spleen
    5. the pancreas

  14. Of the cells listed below, the type with the longest life span is generally the...
    1. erythrocyte
    2. neutrophil
    3. lymphocyte
      4.
    4. none of the above (they all live for approximately 120 days)