Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «G»:
Gangrene: The death of body tissue due to the loss of blood supply to that tissue, sometimes permitting bacteria to invade it and accelerate its decay.
The word "gangrene" comes from the Greek "ganggraina" denoting "an eating sore that ends in mortification" (of the flesh).
Gas gangrene involves the...
Gap junction: An organized collections of protein channels in cell membranes that allows ions and small molecules to pass between adjacent cells. The protein channels that make up gap junctions consist of two connexons. One connexon resides in the membrane of one cell. It aligns and joins the connex...
Gap junction beta 2
Gap junction beta 2: See: GJB2....
Gareis-Mason syndrome: An
inherited (genetic) syndrome with
characteristic features including (1) neurologically: mental retardation and aphasia (lack of
speech); (2) limbs: adducted (clasped) thumbs, absent extensor pollicis longus
and/or brevis muscles to the thumb, shuffling gait, and leg spas...
Gargoylism: From the French
gargouille (waterspout), the word conveys the often-grotesque image of the
medieval cathedral gargoyle. The term gargoylism was once applied to a condition
today called Hurler syndrome. ...
Garlic: A perennial herb of the lily family cultivated for its pungent, edible bulbs. Garlic has been used with the intention of lowering blood pressure and cholesterol.
Allergic reactions, skin inflammation, and stomach upset
have been reported due to garlic. Bad breath is a notorious accompanim...
Gas chromatography (GC)
Gas chromatography (GC):
A type of automated chromatography (a technique used to separate mixtures of substances) in which the mixture to be analyzed is vaporized and carried by an inert gas through a special column and thence to a detection device. The special column can contain an inert porous sol...
Gas exchange: The primary
function of the lungs involving the transfer of oxygen from inhaled
air into the blood and the transfer of carbon dioxide from the blood into the exhaled air....
Gas, intestinal: The complaint referred to as
"intestinal gas" is a common one and the discomfort can be quite significant.
Everyone has gas and eliminates it by burping or passing it through the rectum. In many
instances people think they have too much gas when in reality they have normal...
Gas, laughing: Nitrous oxide, a gas capable of causing general anesthesia.
Today nitrous oxide is sometimes given in the company of other anesthetic agents but is no longer used as the sole anesthetic agent because the concentration of nitrous oxide needed to produce anesthesia is close to the conc...
Gastrectomy: Surgery to remove part of all of the stomach. ...
Gastric: Having to do with the stomach....
Gastric atrophy: A condition in which the stomach muscles shrink
and become weak. It results in a lack of digestive juices. Gastritis: Inflammation of the
Gastric banding: A surgically implanted device used to help a person lose weight. In a surgical procedure, a band is placed around the upper part of the stomach, creating a small pouch that can hold only a small amount of food. The narrowed opening between the stomach pouch and the rest of the stoma...
Gastric cancer: Cancer of the stomach, the major organ that holds food for digestion. Worldwide, stomach cancer is the second most frequent cancer and the second leading cause of death from cancer. It can develop in any part of the stomach and spread to other organs.
Duodenal ulcers (peptic ulcers...