Which of the following best describes the function of the esophageal sphincter?
Understand the Problem
The question is asking about the function of the esophageal sphincter, a muscular ring that controls the passage of substances between the esophagus and the stomach. We need to identify the option that accurately describes its role in preventing backflow or regulating movement of food.
Answer
It prevents air from entering the esophagus and reflux of contents into the pharynx.
The esophageal sphincter prevents air from entering into the esophagus during breathing and prevents the reflux of esophageal contents into the pharynx.
Answer for screen readers
The esophageal sphincter prevents air from entering into the esophagus during breathing and prevents the reflux of esophageal contents into the pharynx.
More Information
The esophageal sphincter plays a crucial role in the digestive system by regulating the passage of food and fluids into the stomach and preventing gastric contents from re-entering the esophagus, thereby safeguarding the airway.
Tips
Confusion often arises between upper and lower esophageal sphincters. It's important to remember their specific locations and functions.
Sources
- Esophageal Sphincter - an overview | ScienceDirect Topics - sciencedirect.com
- Esophagus: Anatomy, Function & Conditions - Cleveland Clinic - my.clevelandclinic.org
- Sphincters: Where They're Found and Purpose - verywellhealth.com
AI-generated content may contain errors. Please verify critical information
