Oct 9, 2025 · The lower esophageal sphincter (LES) is a muscular valve that keeps stomach acid and food from moving back (refluxing) into your esophagus and throat. Failure of the LES can lead to …

Aug 10, 2021 · Achalasia: The lower esophageal sphincter doesn’t open or relax, preventing food from going into the stomach. Experts believe achalasia may be an autoimmune disease, but the exact …

Jan 28, 2022 · The lower esophageal sphincter includes a group of smooth muscles at the base of the esophagus. These muscles open to allow food to flow into the stomach.

Aug 4, 2025 · The Lower Esophageal Sphincter (LES) serves in preventing the reflux of stomach contents, including acid, back into the esophagus. Under normal conditions, the LES remains …

Feb 17, 2025 · The lower esophageal sphincter, also known as the gastroesophageal sphincter, is your body's natural barrier against acid reflux, sitting between your esophagus and stomach.

Explore the Lower Esophageal Sphincter — including its structure, location, and function in the human body.

Mar 26, 2024 · This article discusses the anatomy and function of the lower esophageal sphincter, as well as the diagnosis and treatment of conditions associated with the LES.

The lower esophageal sphincter (LES) is a specialized region of smooth muscle located at the junction of the esophagus and stomach. It plays a critical role in preventing gastroesophageal reflux while …

Aug 9, 2023 · The lower esophageal sphincter (LES) is a muscular ring located at the junction between the esophagus and the stomach. It plays a crucial role in regulating the movement of food and …

Mar 17, 2023 · The lower esophageal sphincter (LES) is a high-pressure zone located where the esophagus meets the stomach and protects the esophagus from the reflux of gastric contents.