Biomed 100 Practice Quiz
Chapter 15, Spring 2008
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  1. The "mucosa" of an abdominal organ is/are
    1. glands associated with the organ that produce mucous
    2. it's outer, slippery membrane that reduces friction with other organs
    3. it's inner mucous membrane that may be involved in absorption of nutrients
    4. a pathological condition in which acid or enzymes have caused corrosion of the GI wall

  2. Which one of the following is the least important constituent of gastric (stomach) secretions?
    1. mucus
    2. enzymes
    3. hydrochloric acid

  3. The duodenum
    1. is the part of the small intestine most directly attached to the stomach
    2. receives fluids from the pancreas, liver, and gall bladder
    3. is the part of the gastrointestinal tract in which most nutrient absorption occurs
    4. both A. and B.
    5. both B. and C.

  4. what type of nutrient must be "emulsified" prior to being digested and absorbed?
    1. proteins
    2. complex carbohydrates
    3. triglycerides (fats and oils)
    4. water-soluble vitamins (vitamins B and C)

  5. The structure(s) responsible for absorbing approximately 90% of nutrients is/are the
    1. rugae of the stomach
    2. sinusoids of the liver
    3. acini of the pancreas
    4. villi of the small intestine
    5. taeniae coli of the large intestine

  6. The enzymes usually involved in the final stages of protein and carbohydrate digestion are present in the wall of the
    1. pancreas
    2. liver
    3. gall bladder
    4. small intestine
    5. large intestine

  7. Factors that help protect the wall of the gastrointestinal tract from acid and enzymes are
    1. bile salts and mucus
    2. mucus and sodium bicarbonate
    3. bile salts and sodium bicarbonate
    4. bile and fat-soluble vitamins

  8. After leaving the stomach and intestines, portal blood travels to the _?_ for "purification."
    1. lungs
    2. liver
    3. kidneys
    4. pancreas