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-) (C)</p> Signup and view all the answers

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

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

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

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

What is the source of bile pigments found in bile?

<p>Liver (C)</p> Signup and view all the answers

Which organ synthesizes bile required for fat digestion and absorption?

<p>Liver (C)</p> Signup and view all the answers

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

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

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

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

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

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

What triggers duodenal gastrin release during the Intestinal Phase?

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

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

<p>Enterogastric reflex (A)</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 (B)</p> Signup and view all the answers

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