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Gastrointestinal Regulatory Substances Quiz
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Gastrointestinal Regulatory Substances Quiz

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Questions and Answers

What is the primary function of the Migrating Motor Complex (MMC)?

  • To sweep remnants of the previous meal and debris from the stomach and small intestine (correct)
  • To regulate the release of motilin during fasting periods
  • To control the opening and closing of the pyloric sphincter
  • To facilitate digestion of food in the small intestine

    • During which phase of the MMC does the pyloric sphincter relax and open completely?

  • Phase I
  • Phase II
  • Phase III (correct)
  • The pyloric sphincter does not open during the MMC

    • How many phases make up the Migrating Motor Complex (MMC)?

  • 3 (correct)
  • 5
  • 4
  • 2

    • What is the duration of Phase I of the MMC?

    <p>40-60 minutes</p> Signup and view all the answers

    What is the primary function of the hormone motilin in relation to the MMC?

    <p>To initiate the MMC during fasting periods</p> Signup and view all the answers

    What happens to the MMC when the next meal is consumed?

    <p>The MMC ceases and the motor activity associated with a meal takes over</p> Signup and view all the answers

    During which phase of the MMC are there intense peristaltic contractions that propagate through the small intestine?

    <p>Phase III</p> Signup and view all the answers

    What is the approximate duration of Phase II of the MMC?

    <p>20-30 minutes</p> Signup and view all the answers

    What is the primary purpose of intestinal segmentation contractions?

    <p>The text does not provide information about intestinal segmentation contractions</p> Signup and view all the answers

    What happens to the release of motilin when a meal is consumed?

    <p>Motilin release is inhibited</p> Signup and view all the answers

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