Digestion Basics Quiz
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Questions and Answers

What is the role of salivary amylase in the digestive process?

  • It emulsifies fats for better absorption
  • It starts the digestion of starch in the food (correct)
  • It neutralizes stomach acid
  • It breaks down proteins into amino acids

    • Where does mechanical digestion take place in the human digestive system?

  • Liver and gallbladder
  • Stomach and large intestine
  • Esophagus and pancreas
  • Mouth and small intestine (correct)

    • What percentage of starch is hydrolyzed into disaccharide in the oral cavity?

  • 30% (correct)
  • 50%
  • 10%
  • 5%

    • Which substance in saliva provides the ideal alkaline pH for amylase to work?

    <p>Hydrogen carbonate</p> Signup and view all the answers

    What is the main function of mechanical digestion?

    <p>Physical breakdown of large food pieces into smaller pieces for enzyme access</p> Signup and view all the answers

    What is the role of segmentation contractions in digestion?

    <p>Segmentation contractions in the small intestine aid in mechanical digestion by mixing and moving food for optimal nutrient absorption.</p> Signup and view all the answers

    How does mastication contribute to digestion?

    <p>Mastication, or chewing, is a form of mechanical digestion that breaks down large food pieces into smaller fragments for enzyme action.</p> Signup and view all the answers

    What are the main components of saliva and their respective functions in digestion?

    <p>Saliva contains salivary amylase for starch digestion, mucus for food lubrication, hydrogen carbonate for creating an alkaline pH for amylase, and electrolytes for maintaining balance.</p> Signup and view all the answers

    Explain the process of chemical digestion in the human digestive system.

    <p>Enzymes in the digestive system break down food into small compounds that the body can utilize for energy and nutrition.</p> Signup and view all the answers

    How is the breakdown of large food pieces facilitated in the small intestine?

    <p>The breakdown of large food pieces in the small intestine is facilitated through segmentation contractions, which mix and break down the food for absorption.</p> Signup and view all the answers

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