Digestive System Overview
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Questions and Answers

What is the function of lipase in pancreatic juice?

  • Increasing surface area for absorption
  • Digesting proteins
  • Breaking down fats into fatty acids and glycerol (correct)
  • Converting complex carbohydrates into glucose
  • Where are the enzymes present that finally convert proteins to amino acids, complex carbohydrates to glucose, and fats to fatty acids and glycerol?

  • Anal sphincter
  • Large intestine
  • Walls of the small intestine (correct)
  • Pancreatic juice
  • What is the role of villi in the small intestine?

  • Regulating the exit of waste material
  • Increasing surface area for absorption (correct)
  • Removing waste material
  • Secreting digestive enzymes
  • How does dental caries or tooth decay begin?

    <p>With bacteria producing acids that softens enamel</p> Signup and view all the answers

    What happens when masses of bacterial cells and food particles stick to teeth?

    <p>Plaque covers the teeth preventing acid production</p> Signup and view all the answers

    What is the function of the sphincter muscle in the context of the digestive system?

    <p>Regulates the exit of food from the stomach into the small intestine</p> Signup and view all the answers

    Why do herbivores have longer small intestines compared to carnivores?

    <p>To allow digestion of cellulose present in grass</p> Signup and view all the answers

    What role does bile juice play in the small intestine?

    <p>Emulsifying fats by breaking them down into smaller globules</p> Signup and view all the answers

    How does the small intestine prepare food for pancreatic enzymes to act effectively?

    <p>By emulsifying fats into smaller globules</p> Signup and view all the answers

    Why is it difficult for enzymes to act on fats in the small intestine at first?

    <p>Fats are present in large globules</p> Signup and view all the answers

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