The esophagus (also spelled oesophagus/œsophagus), or gullet is the muscular tube in vertebrates through which ingested food passes from the mouth area to the stomach. The esophagus is continuous with the laryngeal part of the pharynx at the level of the C6 vertebra.
The esophagus is histologically broken down into 3 parts. The superior portion consists primarily of striated muscle. The middle portion consists of mixed striated and smooth muscle. The inferior 1/3 consists primarily of smooth muscle.
Food is passed through the esophagus by using the process of peristalsis. Specifically, in mammals, it connects the pharynx, which is the body cavity that is common to the digestive system and respiratory system behind the mouth (buccal cavity), with the stomach, where the second stage of digestion is initiated (the first stage of digestion is in the mouth, with teeth and tongue masticating food and mixing it with saliva).
More on [ Esophagus ]

Achalasia - Introduction to this disorder, with symptoms, diagnosis, treatment, risks and the prognosis.
Achalasia - Find definition of this disorder and gives its causes, incidence and risk factors.
Barrett's Esophagus - Information and patient education material on this disease. Causes, diagnosis, symptoms, treatment, tips and the future are all discussed.
Barrett's Esophagus - This is a condition that develops in some people who have chronic gastroesophageal reflux disease (GERD) or inflammation of the esophagus (esophagitis). Information provided by the National Institutes of Health.
Meta Description: [ Barrett's esophagus is a condition that develops in some people who have chronic gastroesophageal reflux disease (GERD) or inflammation of the esophagus (esophagitis).
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Bleeding Esophageal Varices - Find information about this disorder and gives a definition, its causes, incidence and risk factors.
Diagnosis Health - Information and discussion concerning non-obstructive esophageal dysphagia or difficulty swallowing without actual narrowing or stricture of esophagus.
Meta Description: [ Information and discussion concerning non-obstructive esophageal dysphagia or difficulty in swallowing without any narrowing of structure or esophagus. ]
Disorders of Esophagus More Common In Older Adults - Article about the relationship between esophageal disease and age.
Meta Description: [ As a result of certain illnesses or general wear and tear on body systems, the esophagus can present a variety of disorders that tend to affect older Americans.
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Pre-Achalasia Spastic Esophagus and Stomach Problems - Personal site from a patient with this condition.
Seattle Barrett's Esophagus Program - A look at this disease, its symptoms, and possible complications.
Meta Description: [ Seattle Barrett's Esophagus Program description ]
Swallowing Disorders - University of Chicago - Information about various swallowing disorders for patients, physicians and other medical professionals.
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