lower esophageal sphincter

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A ring of smooth muscle fibers at the junction of the esophagus and stomach. Also called cardiac sphincter.

lower esophageal sphincter,

the terminal few centimeters of the esophagus, near the esophagogastric junction, which normally remain constricted except during swallowing and prevent reflux of gastric contents into the esophagus.

lower esophageal sphincter

A 3-5 cm in length zone of ↑ pressure at the junction of the distal esophagus with the gastric cardia, located at the hiatus, which forms a physical barrier in preventing gastric reflux; substances that ↑ the LES tone include gastrin, acetylcholine, serotonin, PGF_{2 a}, motilin, substance P, histamine, pancreatic polypeptide

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achalasia Antigastroesophageal Reflux Drugs Bird Beak Sign cardiac sphincter cardioesophageal reflux cisapride esophageal achalasia esophageal cancer esophageal dilator Esophageal Disorders Esophageal Function Tests esophageal manometry esophageal spasm gastroesophageal reflux gastroesophageal reflux disease gastrokinetic drugs GERD heartburn Heller-Dor Procedure			A transnasal esophageal pH catheter with a sensor placed 5 cm above the lower esophageal sphincter recorded reflux events and the acid clearance time for each event, while polysomnography recorded reflux-associated arousals and awakenings. Sleep aid suppresses reflux-related awakening by Moon, Mary Ann / Clinical Psychiatry News When the lower esophageal sphincter (LES) that separates the esophagus and the stomach fails to close properly, the stomach contents--a mix of food, enzymes, bile, and acid--backwash into the esophagus, often producing the sour taste and discomfort or outright pain of heartburn. Treating heartburn and GERD by Klotter, Jule / Townsend Letter However there are times when the Lower Esophageal Sphincter does not operate properly, then acid from the stomach reflux into the esophagus. Acid Disorder Reflux Is It Heartburn or Something Totally Different.. by Ramshankar / Health, general community			low-output heart failure low-power field low-protein diet low-purine diet low-quality protein low-residue diet low-salt diet low-saturated-fat diet low-sodium diet Low-stretch bandage low-vision therapist low-yield procedure low1 low2 lowampi Lowchen Lowe syndrome Lowe's syndrome Lowe-Terrey-MacLachlan syndrome Lowenstein-Jensen medium lower lower airway lower back pain lower cervical spine injury Lower Esophageal Ring lower esophageal sphincter lower extremity lower extremity monitoring lower extremity suspension lower GI series lower level discriminator lower motor neuron lower motor neuron dysarthria lower motor neuron paralysis lower pole ureter lower rate lower respiratory tract lower respiratory tract infection lower ridge slope lower uterine segment lowest splanchnic nerve lowest-observed-adverse-effect level Lowman clamp Lown-Ganong-Levine syndrome loxapine loxapine succinate loxapine succinate/loxapine HCl Loxitane loxo- Loxodonta africana Loxodontofilaria loxodontis			Lower Eastern Shore Lower Eastern Shore Heritage Committee Lower Eastern Shore Research and Education Center Lower Eastside Service Center Lower Echelon Command and Control Lower Echelon Command and Control Battlefield Operating System Lower Echelon Command, Control, Communications and Intelligence Lower Echelon Knowledge System Lower Echelon Reporting Surveillance Module Lower Echelon Reporting System Lower Economically Developed Country Lower Egypt Lower Egypt Lower Elements Police Lower Elkhorn Natural Resources District Lower Elwha Indian Reservation Lower Elwha Klallam Tribe Lower Empire Lower Empire Lower Empire Lower Enclosure Assembly Lower Epidermis Lower Epidermis Lower Epidermis Lower Epidermis Lower Equipment Bay Lower Equipment Module Lower Erebus Hut Lower Esophageal Ring Lower Esophageal Ring lower esophageal sphincter Lower Esophageal Sphincter Length Lower Esophageal Sphincter Pressure Lower Esophageal Sphincter Relaxation Lower explosive limit Lower Exposure Action Value Lower Exposure Limit lower extremity lower extremity Lower Extremity Amputation Lower Extremity Amputation Prevention Program Lower Extremity Arterial Bypass Lower Extremity Arterial Reconstruction Lower Extremity Arterial Revascularization Lower Extremity Deep Vein Thrombosis Lower Extremity Edema Lower Extremity Equipment-Related Lower Extremity Functional Scale Lower Extremity Lean Body Mass Lower Extremity Mobility Disability lower extremity monitoring Lower Extremity Muscle Performance Lower Extremity Reversed Vein Bypass Grafts lower extremity suspension Lower Extremity Venous Ultrasonography Lower eyelid Lower eyelid Lower eyelid

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