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Questions and Answers
What is a function of the epithelium lining in the digestive tract?
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?
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?
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?
What is the function of mucus production by the epithelium lining?
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In which tracts is IgA present?
In which tracts is IgA present?
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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.
