The Glossary is very useful for the explanation of medical terminology.

Click on a letter to view the corresponding section of the glossary:

  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Q . . .

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R . . .

 

Range of motion (ROM)
The ability of a joint to go through all its normal movements. 
 
Rectal Prolapse  
A condition in which the rectum slips so that it protrudes from the anus.

 

Rectum  
The lower end of the large intestine, leading to the anus.

 

Reflux
A condition that occurs when gastric juices or small amounts of food from the stomach flow back into the esophagus and mouth.

 

Reflux Esophagitis  
Irritation of the esophagus because stomach contents flow back into the esophagus.

 

Regurgitation  
See Reflux.

 

Retinopathy
A disease of the small blood vessels in the retina of the eye.

 

Rhabdomyolysis
an acute disease of skeletal muscle

 

Rheumatic fever
An inflammatory illness that may follow streptococcal infection and damage the heart valves.
 
 
Rheumatoid arthritis
Inflammatory changes in the synovium, or joint lining, that result in pain, stiffness, swelling, and loss of function in the joints.

 

Rhinitis
inflammation of the nasal mucosa.

 

Risk factor
Anything that raises the chance that a person will get a disease. 

 

Rotavirus  
The most common cause of infectious (viral) diarrhea in the United States, especially in children under age 2.

 

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S . . .

Saliva  

Fluid secreted by the salivary and mucous glands of the mouth that moistens food and begins the process of digestion.

 

Salmonella  
A bacterium that may cause intestinal infection and diarrhea.

 

Sarcoidosis  
A condition that causes small, fleshy swellings in the liver, lungs, and spleen.
 
 
Secretin
A hormone made in duodenum. Causes the stomach to make pepsin, the liver to make bile, and the pancreas to make a digestive juice.

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


Serotonin
an agent that acts to constrict blood vessels and also inhibits gastric secretion

 

Shigellosis  
Infection with the bacterium Shigella. Usually causes a high fever, acute diarrhea, and dehydration. 

 

Shwachman's Syndrome  
A digestive and respiratory disorder of children. Certain digestive enzymes are missing and white blood cells are few. Symptoms may include diarrhea and short stature.

 

Side effect
See adverse reaction

 

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

 

Sigmoidoscopy  
Looking into the sigmoid colon and rectum with a flexible or rigid tube.

 

Sitz Bath
 A person sits in a few inches of warm water to help relieve discomfort of hemorrhoids or anal fissure.

 

Small Bowel Enema  
X-rays of the small intestine taken as barium liquid passes through the organ. 

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Small Intestine
It measures about 20 feet. Organ where most digestion occurs. 


Splanchnic
pertaining to the internal organs

 

Spasms  
Muscle movements  that cause pain, cramps, and diarrhea.

 

Spastic Colon  
See Irritable Bowel Syndrome  (IBS).

 

Sphincter  
A ring-like band of muscle that opens and closes an opening in the body. 

 

Spleen
The organ that cleans blood and produces white blood cells. 

 

Splenic Flexure Syndrome  
A condition that occurs when air or gas collects in the upper parts of the colon. Causes pain in the upper left abdomen. The pain often moves to the left chest and may be confused with heart problems.

 

Steatorrhea  
A condition in which the body cannot absorb fat. Causes a buildup of fat in the stool and loose, greasy, and foul bowel movements.

 

Stenosis  
Narrowing of a duct or canal.

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Stomach  
The organ between the esophagus and the small intestine. The stomach is where digestion of protein begins.

 

Stomach Ulcer  
An open sore in the lining of the stomach. Also called gastric ulcer.

 

Stress Ulcer  
An upper GI ulcer from physical injury such as surgery, major burns, or critical head injury.

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Stricture  
The abnormal narrowing of a body opening. Also called stenosis.


Stroke
Disease caused by damage to blood vessels in the brain.  Usually only one side of the body is affected.

 

Subcutaneous Injection
Putting a fluid into the tissue under the skin with a needle and syringe.

 

Sugar
A class of carbohydrates that taste sweet. Sugar is a quick and easy fuel for the body to use. Types of sugar are lactose, glucose, fructose, and sucrose.

 

Sulfonylureas
Pills or capsules that people take to lower the level of glucose (sugar) in the blood. See also: Oral hypoglycemic agents.

 

Syndrome
A set of signs or a series of events occurring together that make up a disease or health problem.
 
Synovial
relating to the lubricating fluid in joints

 

Synovial fluid
Fluid released into movable joints by surrounding membranes. This fluid lubricates the joint and reduces friction.

 

Synovitis
inflammation of the joints; arthritis

 

Systemic
A word used to describe conditions that affect the entire body. Diabetes is a systemic disease because it involves many parts of the body such as the pancreas, eyes, kidneys, heart, and nerves.

 

Systemic lupus erythematosus
Lupus is an autoimmune disease, which causes the body to harm its own healthy cells and tissues. This leads to inflammation and damage of various body tissues. 

 

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T . . .

 T Cell

white blood cell critical to the immune response. 

 

Tachyarrhythmia
a distrubance of the heart's rhythym resulting in a heart rate of over 100 beats per minute

 

Tendons
Tough, fibrous cords of tissue that connect muscle to bone.

 

Tenesmus  
Straining to have a bowel movement. 

Thrombosis
The formation of a mass of aggregated blood factors (thrombus); coagulation of the blood; the formation, development, or presence of a thrombus.

 

Tracheoesophageal Fistula (TEF)
A condition that occurs when there is a gap between the upper and lower segments of the esophagus. Food and saliva cannot pass through.

 

Transverse Colon  
The part of the colon that goes across the abdomen from right to left.

 

Travelers' Diarrhea  
An infection caused by unclean food or drink. Often occurs during travel outside one's own country. 

 

Triglyceride
A type of blood fat

 

Tropical Sprue  
A condition of unknown cause. Abnormalities in the lining of the small intestine prevent the body from absorbing food normally.

 

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