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Functions of Epithelial Lining in the Digestive System

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Functions of Epithelial Lining in the Digestive System

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Questions and Answers

What is a function of the epithelium lining in the digestive tract?

Produce mucus for lubrication and protection.

Provide a selectively permeable barrier between the contents of the tract and the tissues of the body. (correct)

Produce hormones that affect the activity of the digestive system.

Transport and digest food.

What is one of the functions of the lymphoid nodules in the lamina propria and submucosal layer?

Produce mucus for lubrication and protection.

Facilitate the absorption of nutrients.

Produce hormones that regulate digestion.

Protect the organism from bacterial invasion. (correct)

What is produced by the macrophages and lymphoid cells in the lamina propria?

IgM

IgA (correct)

IgE

IgG

What is the function of mucus production by the epithelium lining?

<p>To provide lubrication and protection.</p> Signup and view all the answers

In which tracts is IgA present?

<p>All of the above</p> Signup and view all the answers

Study Notes

Epithelium Lining Functions

Provides a selectively permeable barrier between the contents of the tract and the tissues of the body.
Facilitates the transport and digestion of food.
Promotes absorption of the products of digestion.
Produces hormones that affect the activity of the digestive system.
Produces mucus for lubrication and protection.

Defense Mechanisms

Lamina propria and submucosal layer contain abundant lymphoid nodules that protect the organism from bacterial invasion.
Lamina propria is rich in macrophages and lymphoid cells that produce IgA.
IgA is present in the respiratory, digestive, and urinary tracts.

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Description

This quiz covers the different functions of the epithelial lining in the digestive system, including its role in digestion, absorption, and protection.