Biomed 100 Practice Quiz
Chapter 12, Spring 2008
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  1. Which of the following are considered "formed elements" of blood?
    1. red blood cells
    2. white blood cells
    3. platelets
    4. A. and B.
    5. al of the above

  2. Erythrocytes contain
    1. a lobed (irregular) nucleus
    2. a round nucleus
    3. hemoglobin
    4. A. and C.
    5. B. and C.

  3. The number of oxygen molecules that one hemoglobin molecule can hold is equal to
    1. the oxygen pressure in the air in the lungs
    2. the number of erythrocytes per cubic millimeter of blood
    3. the number of hemoglobin molecules per erythrocytes
    4. the number of iron atoms in the hemoglobin molecule

  4. Production of red blood cells is most directly Increased in response to
    1. infection
    2. decreased iron levels in blood
    3. decreased oxygen levels in blood
    4. increased oxygen pressure in lungs

  5. What is a neutrophil?
    1. the most numerous type of white blood cell
    2. the least common type of white blood cell
    3. a large cell that releases fragments known as "platelets"
    4. a white blood cell that may become a T cell if properly stimulated
    5. a white blood cell that may become a B cell if properly stimulated

  6. When exposed to a rough surface, _?_ are likely to form a "plug."
    1. platelets
    2. erythrocytes
    3. neutrophils
    4. lymphocytes

  7. The hematocrit and red blood cell count, in cells per cubic millimeter, may be affected by
    1. sex (male v.s. female)
    2. level of aerobic condition ("in shape" v.s. "out of shape")
    3. both of the above
    4. none of the above

  8. Which of the following is false?
    1. There are five types of leukocytes (white blood cells).
    2. Lymphocytes are one type of leukocyte.
    3. New leukocytes are produced throughout a person's lifetime.
    4. Leukocytes are produced only in lymphoid tissues such as those in lymph nodes, the spleen and tonsils, etc.