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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)

What is the duration of Phase I of the MMC?

40-60 minutes Signup and view all the answers

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

To initiate the MMC during fasting periods Signup and view all the answers

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

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

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

Phase III Signup and view all the answers

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

20-30 minutes Signup and view all the answers

What is the primary purpose of intestinal segmentation contractions?

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

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

Motilin release is inhibited Signup and view all the answers