Chapter 23: Digestive System

Flashcard
•
Biology
•
University
•
Hard
Diana Aguilera
FREE Resource
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18 questions
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1.
FLASHCARD QUESTION
Front
Explain how the enteric nervous system supports the digestive system. What might occur that could result in the autonomic nervous system having a negative impact on digestion?
Back
The enteric nervous system regulates digestive processes, controlling peristalsis and enzyme secretion. If the autonomic nervous system is negatively impacted, it can lead to issues like reduced motility or secretion, causing digestive disorders.
2.
FLASHCARD QUESTION
Front
What layer of the alimentary canal tissue is capable of helping to protect the body against disease, and through what mechanism?
Back
The mucosa layer protects against disease through the secretion of mucus and antibodies, which trap pathogens and prevent their entry.
3.
FLASHCARD QUESTION
Front
Offer a theory to explain why segmentation occurs and peristalsis slows in the small intestine.
Back
Segmentation allows for mixing and absorption of nutrients, while slowed peristalsis ensures that food remains in the small intestine longer for optimal nutrient absorption.
4.
FLASHCARD QUESTION
Front
What type of reflex is triggered when you smell freshly baked bread, and what is the result?
Back
The reflex triggered is a cephalic reflex, resulting in increased salivation and preparation of the digestive system for food intake.
5.
FLASHCARD QUESTION
Front
Discuss how saliva produced by the parotid gland differs in action from saliva produced by the sublingual gland.
Back
Parotid gland saliva is primarily serous and rich in enzymes, aiding in digestion, while sublingual gland saliva is more mucous, providing lubrication.
6.
FLASHCARD QUESTION
Front
Which teeth did the player lose when all eight anterior teeth were knocked out, and how does this loss affect food ingestion?
Back
The player lost his incisors, which are crucial for cutting food. This loss can hinder the ability to bite and chew effectively.
7.
FLASHCARD QUESTION
Front
What prevents swallowed food from entering the airways?
Back
The epiglottis prevents swallowed food from entering the airways by covering the trachea during swallowing.
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