Quiz 3: Digestive System and Metabolism
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Questions and Answers

What is the first process to occur in the digestive system?

  • Defecation
  • Ingestion (correct)
  • Peristalsis
  • Absorption
  • Which part of the digestive system operates voluntarily and is controlled by the cerebral cortex?

  • Pyloric sphincter
  • External anal sphincter (correct)
  • Ileocecal valve
  • Internal anal sphincter
  • What is the main function of the pharynx in the digestive system?

  • Secretion
  • Mechanical digestion
  • Propulsion (correct)
  • Absorption
  • Which structure creates a brush border appearance upon microscopic examination?

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

    What is the main function of enzymes in the mouth?

    <p>Breakdown of carbohydrates</p> Signup and view all the answers

    What is the primary role of the small intestine in the digestive system?

    <p>Absorption of nutrients</p> Signup and view all the answers

    Which sphincter separates the stomach from the small intestine?

    <p>Pyloric sphincter</p> Signup and view all the answers

    What type of contractions propel the contents of the colon towards the distal large intestine?

    <p>Mass movements</p> Signup and view all the answers

    What is the primary function of bile in the digestion process?

    <p>Emulsification of lipids</p> Signup and view all the answers

    What is the result of damage to the enteric nervous system that innervates the digestive organs?

    <p>Disrupted motility</p> Signup and view all the answers

    What is the term for the process of removing waste from the body through the anus?

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

    What is the name of the phase of stomach regulation triggered by the sensory stimuli of food, such as smelling or seeing it?

    <p>Gastric phase</p> Signup and view all the answers

    What is the requirement for the conversion of pepsinogen into the active form, pepsin?

    <p>acidic pH</p> Signup and view all the answers

    What is affected by damaged hepatocytes?

    <p>bile production</p> Signup and view all the answers

    What is the most potent stimulus for the release of bile by the liver?

    <p>bile salt re-entry into the liver</p> Signup and view all the answers

    What controls the passage of chyme from the stomach to the small intestine?

    <p>pyloric sphincter</p> Signup and view all the answers

    What is the primary function of bile in the digestive process?

    <p>fat emulsification</p> Signup and view all the answers

    What is the role of the vagus nerve in the digestive process?

    <p>stimulating the contraction of the stomach</p> Signup and view all the answers

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