697
CHAPTER SEVENTEEN
Digestive System
OUTCOMES 17.4, 17.7, 17.9, 17.10
1. Several years ago, an extract from kidney beans was sold
in health-food stores as a “starch blocker.” Advertisements
claimed that one could eat a plate of spaghetti, yet absorb
none of it, because starch-digesting enzyme function would
be blocked. The kidney bean product indeed kept salivary
amylase from functioning. However, people who took the
starch blocker developed abdominal pain, bloating, and gas.
Suggest a reason for these ill effects.
OUTCOMES 17.6, 17.9
2. How would removal of 95% of the stomach (subtotal
gastrectomy) to treat severe ulcers or cancer affect digestion
and absorption? How would the patients have to alter eating
habits? Why? Do you think that people should have this type
of surgery to treat life-threatening obesity?
INTEGRATIVE ASSESSMENTS/CRITICAL THINKING
OUTCOMES 17.6, 17.9
3. What effect is a before-dinner alcoholic cocktail likely to have
on digestion? Why are such beverages inadvisable for persons
with ulcers?
OUTCOMES 17.6, 17.9
4. What type of acid-base imbalance is likely to develop if the
stomach contents are repeatedly lost by vomiting over a
prolonged period? Which acid-base imbalance may develop as
a result of prolonged diarrhea?
OUTCOMES 17.7, 17.8
5. Why might a person with infl
ammation of the gallbladder
(cholecystitis) also develop infl
ammation of the pancreas
(pancreatitis)?
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WEB CONNECTIONS
Be sure to visit the text website at
www.mhhe.com/shier12
for
answers to chapter assessments, additional quizzes, and interactive
learning exercises.
ANATOMY & PHYSIOLOGY REVEALED
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