Digestive System Overview
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Questions and Answers

What is the purpose of saliva in the digestive process?

  • To soften the lining of the digestive canal
  • To help in processing food particles to generate small, uniformly textured particles
  • To secrete an enzyme that breaks down starch into sugar (correct)
  • To aid in peristaltic movements

    • What is the role of biological catalysts in digestion?

  • To provide energy for digestion
  • To break down complex molecules into smaller molecules (correct)
  • To help in mixing food with saliva
  • To transport digested food through the digestive tract

    • Which organ in the digestive system expands when food enters it?

  • Stomach (correct)
  • Small intestine
  • Oesophagus
  • Large intestine

    • What is the function of peristaltic movements in the digestive system?

    <p>To push food forward along the digestive tract</p> Signup and view all the answers

    Which enzyme found in saliva breaks down starch?

    <p>Salivary amylase</p> Signup and view all the answers

    What happens to the food in the mouth during chewing?

    <p>It is moved around by the muscular tongue while being chewed</p> Signup and view all the answers

    Why is it necessary to mix food with saliva in the mouth?

    <p>To moisten the food and make its passage smooth through the digestive tract</p> Signup and view all the answers

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