Digestive System Functions and Alimentary Canal Layers
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Questions and Answers

What is the main function of incisors in the digestive system?

  • Tearing and piercing food
  • Crushing food
  • Cutting pieces of food (correct)
  • Grinding food
  • Which layer of the alimentary canal contains glands, nerve fibers, and blood vessels?

  • Mucosa
  • Serosa
  • Muscularis
  • Submucosa (correct)
  • What is the function of premolars in digestion?

  • Grinding food
  • Crushing food (correct)
  • Cutting pieces of food
  • Tearing and piercing food
  • What is the purpose of the serosa layer in the digestive system?

    <p>Reduces friction as organs contract</p> Signup and view all the answers

    How many teeth do toddlers typically have compared to adults?

    <p>20 compared to 32</p> Signup and view all the answers

    Which teeth are responsible for tearing and piercing food in the mouth?

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

    What is the role of the uvula in the digestive process?

    <p>To prevent swallowed food from entering the nasal cavity</p> Signup and view all the answers

    Which structure in the stomach helps to kill microbes in food?

    <p>Parietal cells</p> Signup and view all the answers

    During deglutition, what is the term for the food lump formed after chewing and mixing with saliva?

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

    Which phase of deglutition involves the epiglottis blocking the larynx?

    <p>Pharyngeal-esophageal phase</p> Signup and view all the answers

    What is the main function of the cardiac sphincter in the stomach?

    <p>To regulate food entry from the esophagus into the stomach</p> Signup and view all the answers

    Which type of muscle in the stomach is responsible for churning food?

    <p>Circular muscularis</p> Signup and view all the answers

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