Biomed 100 Practice Quiz
Chapter 12, Fall 2006
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  1. Which one of the following is not a "formed element?"
    1. plasma
      2.
    2. platelets
    3. red blood cells
    4. white blood cells

  2. Biconcave disks (indented on both sides), that contain hemoglobin, are...
    1. platelets
    2. lymphocytes
    3. blood clots
    4. erythrocytes
      5.
    5. granular leukocytes

  3. In normal blood, the _?_ have a nucleus.
    1. red blood cells
    2. white blood cells
      3.
    3. both of the above
    4. none of the above

  4. True or false? The average life span of red blood cells is about one to two (1-2) days.
    1. True.
    2. False.
      3.

  5. Which formed elements ("blood cells") normally have the greatest life span?
    1. platelets
    2. lymphocytes
      3.
    3. erythrocytes
    4. granular leukocytes

  6. Which one of the following is expected to be the highest cell count?
    1. red cell count of healthy male
      2.
    2. red cell count of healtly female
    3. white cell count of healthy male
    4. white cell count of healthy female

  7. Functions of plasma proteins include...
    1. helping maintain the osmotic pressure of blood.
    2. providing fibers needed for coagulation (blood clotting).
    3. antibodies and complement that counteract bacteria, viruses, etc.
    4. all of the above
      5.
    5. none of the above

  8. Oxygen separates from hemoglobin in all of the following organs except the...
    1. brain
    2. lungs
      3.
    3. kidneys
    4. heart muscle
    5. skeletal muscle

  9. Debris in the blood, including old red blood cells, is destroyed by...
    1. eosinophils in blood
    2. lymphocytes in lymph nodes
    3. stem cells in red bone marrow
    4. mast cells in connective tissues
    5. macrophages in the liver and spleen
      6.

  10. Which one of the following is the least important in hemostasis (the stoppage of bleeding from damaged vessels)?
    1. soluble fibrinogen is converted to insoluble fibrin
    2. platelets "stick to" exposed collagen and to each other
    3. helper T cells secrete compounds that enhance lymphocyte function
      4.