| gastral mesoderm | Mesoderm in lower vertebrates formed by constriction from the roof of the archenteron or yolk sac. (05 Mar 2000) |
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| gastralgia | <symptom> Gastric colic. (18 Nov 1997) |
| gastrea theory | That the two-layered gastrula is the ancestral form of all multicellular animals. Synonym: gastrea theory. (05 Mar 2000) |
| gastrectasia | Dilation of the stomach. Origin: Gastr-+ G. Ektasis, extension (05 Mar 2000) |
| gastrectasis | Dilation of the stomach. Origin: Gastr-+ G. Ektasis, extension (05 Mar 2000) |
| gastrectomy | <procedure, surgery> A surgical procedure where all or a portion of the stomach is removed. Indicated in some cases of intractable gastric ulcers. See: Zollinger-Ellison syndrome. (27 Sep 1997) |
| gastric | <anatomy> Of or relating to the stomach. (09 Oct 1997) |
| gastric acid | Hydrochloric acid present in gastric juice. (12 Dec 1998) |
| gastric acidity determination | Gastric analysis for determination of free acid or total acid. (12 Dec 1998) |
| gastric algid malaria | See: algid malaria. Induced malaria, malaria acquired by artificial means, e.g., via blood transfusion, common syringes, or malariotherapy. Intermittent malaria, a malarial fever, usually of the tertian or quartan type, in which there is complete apyrexia, with absence of the other symptoms, in the intervals between the paroxysms. (05 Mar 2000) |
| gastric analysis | Measurement of pH and acid output of stomach contents; basal acid output can be determined by collecting the overnight gastric secretion or by a 1-hr collection; maximal acid output is determined following injection of histamine; output is measured by titration with a strong base. (05 Mar 2000) |
| gastric area | One of a number of small polygonal area's, 1-6 mm in diameter, separated by linear depressions on the surface of the mucous membrane of the stomach; they contain the gastric pits, with several gastric glands opening into each pit. Synonym: area gastrica. (05 Mar 2000) |
| gastric arteries | Arteries supplying the stomach along the lesser curvature. See: left gastric artery, right gastric artery. (05 Mar 2000) |
| gastric atrophy | <gastroenterology> A condition in which the stomach muscles shrink and become weak. It results in a lack of digestive juices. Gastritis: Inflammation of the stomach. (12 Dec 1998) |
| gastric balloon | An inflatable device implanted in the stomach as an adjunct to therapy of morbid obesity. Specific types include the silicone Garren-Edwards gastric bubble (gegb), approved by the FDA in 1985, and the ballobes balloon. (12 Dec 1998) |