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Ch. 22 The Digestive System
Amerman- Human Anatomy & Physiology 3e
Amerman3rd EditionHuman Anatomy & PhysiologyISBN: 9780138247201, 9780138247928, 9780138201814Not the one you use?Change textbook
Chapter 22, Problem 14e

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
e. During feeding, the small intestine exhibits motion in the migrating motor complex pattern.

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1
Understand the function of the small intestine during feeding. The small intestine primarily uses segmentation and peristalsis to mix and propel food, rather than the migrating motor complex (MMC).
Recall that the migrating motor complex (MMC) is a pattern of motility that occurs in the fasting state, not during feeding. It helps clear undigested material and bacteria from the small intestine.
Identify the error in the statement: The statement incorrectly associates the migrating motor complex (MMC) with feeding, which is false.
Correct the statement: During feeding, the small intestine exhibits motion in the segmentation and peristalsis patterns, not the migrating motor complex pattern.
Review the corrected statement to ensure it accurately reflects the physiological processes of the small intestine during feeding.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Migrating Motor Complex (MMC)

The Migrating Motor Complex is a pattern of electromechanical activity observed in the gastrointestinal tract during fasting. It consists of a series of contractions that occur in the stomach and small intestine, helping to clear out residual food and secretions. The MMC is crucial for maintaining gut health and preventing bacterial overgrowth, but it is not primarily active during feeding.
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Small Intestine Motility

Small intestine motility refers to the coordinated contractions of the smooth muscle in the small intestine that facilitate the movement of food and digestive contents. During feeding, the small intestine exhibits different motility patterns, such as segmentation and peristalsis, which are essential for mixing and propelling food rather than the MMC pattern, which is more prominent during fasting.
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Feeding Physiology

Feeding physiology encompasses the processes and mechanisms involved in digestion and nutrient absorption after food intake. It includes the roles of various hormones, enzymes, and motility patterns that work together to optimize digestion. Understanding feeding physiology is essential for recognizing how the body responds to food and the importance of different motility patterns during and after meals.
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Related Practice
Textbook Question

Which of the following best describes the role of bile salts in lipid digestion?

a. Bile salts begin chemical digestion of lipids.

b. Bile salts bind to lipids and physically break them apart into monoglycerides and free fatty acids.

c. Bile salts bind to lipids and physically break them apart into smaller pieces.

d. Bile salts interact with pancreatic lipase and catalyze lipid breakdown.

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Textbook Question

Lipids associate with bile salts in the small intestine to form_____ . In the enterocyte, lipids are packaged with other lipids into______.

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Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

c. Smooth muscle of the stomach contracts when food enters from the esophagus.

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Textbook Question

The common hepatic duct and main pancreatic duct enter into the:

a. Pyloric sphincter

b. Duodenum

c. Ileum

d. Cecum

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Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

b. The esophageal and pharyngeal phases of swallowing are mediated by the swallowing reflex of the brainstem and the enteric nervous system.

Textbook Question

Which of the following best describes the microscopic structure of the liver?

a. Hexagonal plates of hepatocytes surrounding a central vein with portal triads at each corner

b. Octagonal plates of hepatocytes surrounding a central artery with portal triads at each corner

c. Irregular groups of hepatocytes surrounding a central vein with bile ducts at each corner

d. Hexagonal plates of hepatocytes surrounding a portal vein with bile ducts at each corner

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