| Gastrophilus | A genus of botflies (horse botflies or warble flies) that cause enteric myiasis in domestic and wild horses and other equids. The bee-like adult attaches eggs to the hairs of the legs or body of the horse; infective eggs hatch when contacted by the lips of the horse, and the larvae attach to, penetrate, and are swallowed or burrow through the tissues to the stomach, where they adhere. After some months, the larvae pass out with the faeces, pupate, and emerge as adults. Moderate infection produces little or no symptomatology; heavy infection can cause severe digestive disorders. Important species include Gasterophilus haemorrhoidalis (the redtailed botflies, a nose fly); Gasterophilus intestinalis (the common horse botfly or nit fly), whose larvae are found in the oesophageal portion of the stomach; Gasterophilus nasalis or Gasterophilus veterinus (chin fly or throat botfly), found in the throat or under the jaws of the horse, the larvae migrating to the pyloric portion of the stomach or the anterior duodenum; and Gasterophilus pecuorum (the dark-winged horsefly), the most common and pathogenic species in Europe (absent in the U.S.). Synonym: Gastrophilus. Origin: G. Gaster, belly, stomach, + philos, fond (05 Mar 2000) |
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| gastrophrenic | <anatomy> Pertaining to the stomach and diaphragm; as, the gastrophrenic ligament. Origin: Gastro- + -phrenic. Source: Websters Dictionary (01 Mar 1998) |
| gastrophrenic ligament | <anatomy> The portion of the greater omentum that extends from the greater curvature of the stomach to the inferior surface of the diaphragm. Synonym: ligamentum gastrophrenicum, gastrodiaphragmatic ligament, phrenogastric ligament. (05 Mar 2000) |
| gastroplasty | Surgical treatment of the stomach or lower oesophagus used to decrease the size of the stomach. The procedure is used mainly in the treatment of morbid obesity and to correct defects in the lower oesophagus or the stomach. Different procedures employed include vertical (mesh) banded gastroplasty, silicone elastomer ring vertical gastroplasty and horizontal banded gastroplasty. (12 Dec 1998) |
| gastroplication | An operation for reducing the size of the stomach by suturing a longitudinal fold with the peritoneal surfaces in apposition. Synonym: gastroptyxis, gastrorrhaphy, stomach reefing. Origin: Gastro-+ L. Plico, to fold (05 Mar 2000) |
| gastropneumatic | <anatomy> Pertaining to the alimentary canal and air passages, and to the cavities connected with them; as, the gastropneumatic mucuos membranes. Origin: Gastro- + pneumatic. Source: Websters Dictionary (01 Mar 1998) |
| gastropneumonic | Synonym: pneumogastric. Origin: Gastro-+ G. Pneumon, lung (05 Mar 2000) |
| gastropod | A member of the largest class of phylum Mollusca. Characteristics generally include: a foot upon which the rest of the body (called the visceral mass) sits, a well-developed head, a protective one-piece shell, and body torsion - where most of the visceral mass is twisted anticlockwise 180 degrees so that the back end of the animal is positioned over its head. The class includes the snails, slugs, sea hares, sea slugs, limpets, and abolone.Compare brachiopod. (09 Oct 1997) |
| gastropoda | <zoology> One of the classes of Mollusca, of great extent. It includes most of the marine spiral shells, and the land and fresh water snails. They generally creep by means of a flat, muscular disk, or foot, on the ventral side of the body. The head usually bears one or two pairs of tentacles. See Mollusca. Alternative forms: Gasteropoda. The Gastropoda are divided into three subclasses; viz., (a) The Streptoneura or Dioecia, including the Pectinibranchiata, Rhipidoglossa, Docoglossa, and Heteropoda. (b) The Euthyneura, including the Pulmonata and Opisthobranchia. (c) The Amphineura, including the Polyplacophora and Aplacophora. Origin: NL, fr. Gr, stomach + -poda. Source: Websters Dictionary (01 Mar 1998) |
| gastropodous | <zoology> Of or pertaining to the Gastropoda. Source: Websters Dictionary (01 Mar 1998) |
| gastroptosis | Gastroptosia Downward displacement of the stomach. Synonym: bathygastry, descensus ventriculi, ventroptosis, ventroptosia. Origin: Gastro-+ G. Ptosis, a falling (05 Mar 2000) |
| gastroptyxis | Synonym: gastroplication. Origin: Gastro-+ G. Ptyxis, a fold (05 Mar 2000) |
| gastropulmonary | <anatomy> Of or pertaining to the lungs and the stomach. The pneumogastric nerve. <anatomy> Pneumogastric nerve, one of the tenth pair of cranial nerves which are distributed to the pharynx, oesophagus, larynx, lungs, heart, stomach, liver, and spleen, and, in fishes and many amphibia, to the branchial apparatus and also to the sides of the body. Origin: Pneumo- + gastric. Source: Websters Dictionary (01 Mar 1998) |
| gastropylorectomy | Excision of the pylorus. Synonym: gastropylorectomy, pylorogastrectomy. Origin: pylor-+ G. Ektome, excision (05 Mar 2000) |
| gastropyloric | Relating to the stomach as a whole and to the pylorus. (05 Mar 2000) |
| gastroscope |
A thin, lighted tube used to view the inside of the stomach.
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| gas constant |
of a mixture is the universal gas constant divided by the apparent molar mass of the mixture.
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| gas chromatography |
Analytical separation technique where the minor components in a mixture of gases are separated and resolved into individual components. The technique requires the transmission of the gas sample through a column in the chromatograph using a mobile phase or carrier gas. The column is either packed or coated with a material for which the gases to be separated have an affinity and the strength of this affinity largely determines the time any individual component is retained in the column. ...
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| gas constant |
The constant factor in the equation of state for ideal gases. The universal gas constant is The gas constant for a particular gas is where m is the molecular weight of the gas. For a mixture, the
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| gastric juice |
digestive fluids produced by the lining of the stomach that break down proteins and destroy harmful organisms
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