Digestive System Enzymes and Absorption Quiz
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Questions and Answers

Which enzyme present in the stomach acts on proteins by denaturing them?

  • Salivary amylase
  • Gastric lipase
  • Lingual lipase
  • HCl (correct)
  • What happens to breathing when food enters the nasopharynx?

  • Breathing becomes irregular
  • Breathing temporarily stops (correct)
  • Breathing speeds up
  • Breathing slows down
  • What protects the stomach from self-digestion by its acidic contents?

  • Mucous (correct)
  • Salivary amylase
  • Gastric lipase
  • Lingual lipase
  • Which component neutralizes acid in the small intestine to allow pancreatic enzymes to function effectively?

    <p>Alkaline fluid (HCO3-)</p> Signup and view all the answers

    Which hormone is responsible for increasing pancreatic enzyme secretion by the duodenum?

    <p>Cholecystokinin (CCK)</p> Signup and view all the answers

    What is the primary effect of cholecystokinin (CCK) on the body?

    <p><strong>Stimulates pancreatic enzyme secretion</strong></p> Signup and view all the answers

    What is the effect of gallbladder contractions on gastric motility and secretion?

    <p>Decrease gastric motility and secretion</p> Signup and view all the answers

    What enzyme deficiency leads to lactose intolerance due to undigested lactose reaching the large intestine?

    <p>Lactase deficiency</p> Signup and view all the answers

    What is the main function of bile salts in fat digestion and absorption?

    <p>Emulsification of fat globules</p> Signup and view all the answers

    Where does absorption of nutrients primarily occur due to the large surface area?

    <p>Small intestine</p> Signup and view all the answers

    What is the source of bile pigments found in bile?

    <p>Liver</p> Signup and view all the answers

    Which organ synthesizes bile required for fat digestion and absorption?

    <p>Liver</p> Signup and view all the answers

    What triggers the Cephalic Phase, preparing the stomach for food?

    <p>Sight and smell of food</p> Signup and view all the answers

    What is the pH of the stomach when it is nearly empty?

    <p>pH 3</p> Signup and view all the answers

    Which hormone is responsible for slowing down gastric emptying during the Intestinal Phase?

    <p>Cholecystokinin (CCK)</p> Signup and view all the answers

    What triggers duodenal gastrin release during the Intestinal Phase?

    <p>Duodenal stretch</p> Signup and view all the answers

    Which inhibitory signal causes a decrease in gastric motility during the Intestinal Phase?

    <p>Enterogastric reflex</p> Signup and view all the answers

    What is the main effect of secretin released due to acid during the Intestinal Phase?

    <p>Decreases gastric motility</p> Signup and view all the answers

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