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Questions and Answers
What is the function of the upper esophageal sphincter?
What is the function of the upper esophageal sphincter?
- To allow food to pass through when triggered by the swallowing reflex
- To close the esophagus at rest
- To prevent back flow from the esophagus into the pharynx (correct)
- To protect the mucous membrane of the esophagus
Why is the epithelium of the esophagus continuously replaced?
Why is the epithelium of the esophagus continuously replaced?
- To allow food to pass through easily
- Due to the volume of food that passes inside the esophagus (correct)
- To reinforce the muscular wall of the esophagus
- To maintain an acidic environment in the esophagus
Where is the esophageal inlet located?
Where is the esophageal inlet located?
- Inside the pharynx
- At the opening of the mouth
- In front of the cricoid cartilage
- Behind the cricoid cartilage (correct)
What triggers the opening of the upper esophageal sphincter?
What triggers the opening of the upper esophageal sphincter?
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