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Tag Archives: Glossary

Solitary Rectal Ulcer: definition

A rare type of ulcer in the rectum that can develop because of straining to have a bowel movement.

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Small Intestine Mucosal Biopsy: definition

The standard test for diagnosing celiac disease.

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Small Intestine: definition

The organ where most digestion occurs. It measures about 20 feet and includes the duodenum, jejunum, and ileum.

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Small Bowel Enema: definition

X rays of the small intestine taken as barium liquid passes through the organ. Also called small bowel follow-through.

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Sitz Bath: definition

A special plastic tub that allows a person to sit in a few inches of warm water to help relieve the discomfort of hemorrhoids or anal fissures.

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Sigmoid Colon: definition

The lower part of the colon that empties into the rectum.

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Short Stature: definition

A person who is significantly below the average height, possibly due to a disease or medical condition such as malnutrition.

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Short Bowel Syndrome: definition

Problems related to absorbing nutrients after removal of part of the small intestine. Symptoms include diarrhea, weakness, and weight loss.

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Shigellosis: definition

An infection with the bacterium Shigella, which usually causes a high fever, acute diarrhea, and dehydration.

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Serotonin Agonists: definition

These drugs help the muscles in the intestines work correctly when a slow-moving digestive system is caused by low levels of serotonin. Serotonin is a neurotransmitter found mostly in the digestive tract.

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Segmentation: definition

The process by which muscles in the intestines move food and wastes through the body.

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Secretin: definition

A hormone made in the duodenum that causes the stomach to make pepsin, the liver to make bile, and the pancreas to make digestive juices.

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Sarcoidosis: definition

A condition that causes granulomas in the liver, lungs, and spleen.

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Salmonella: definition

A bacterium that may cause intestinal infection and diarrhea.

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Saliva: definition

A mixture of water, protein, and salts produced in the mouth that makes food easy to swallow and begins the process of digestion.

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