gast romal a cia (gast romal asia)

[NL.. IMG:content-2132.png:[blocks in formation] gastrophrenic (gas-tro-frē'nik), a. [ στήρ (γαστρ-), stomach, + φρήν , the diaphragm.] Pertaining to the stomach and the diaphragm: applied to a fold of the peritoneum between these organs. Gastrophysema (gastro-fi-sē'mä), n. [NL., φυσᾶν , blow, breathe.] A supposed genus of physemarian chalk-sponges, related to Haliphysema, but having several chambers. According to Haeckel (1876), these sponges are very near the archetypal gastrula in structure. It is really a foraminiferous form, not a sponge at all. See gastropneumonic (gastro-nū-mon'ik), a. [ gasteropod , (γαστρ-), stomach, + μυθείσθαι, speak, μύθος , gastropore (gastro-por), n . word, speech: see myth .] One whose voice ap- ва pears to come from the belly; a ventriloquist. IMG:content-2133.png:[blocks in formation] (γαστρ-), stomach, + πόρος , pore.] orifice of a gastrozoöid or nutritive polypite. Moseley , 1881. gastrorrhagia (gas-tro-ra ra'ji-ä), n. [ γαστήρ ( γαστρ- ), stomach, + -ραγία, ῥηγνύναι , break.] In pathol ., hemorrhage from the stomach. gastrorrhaphy (gas-tror'a-fi), n. [ Pud ῥάπτειν, sew.] In surg ., the operation of sew- ing up wounds of the abdomen. gastrorrhea, gastrorrhea (gas-trō-rē ā), n . [NL. gastrorrhea , γαστρ- ), stomach, + ῥοία , a flow, ῥεῖν , flow.] In pathol ., a morbid increase in the secretion of the mucous glands of the stomach. gastroscopic (gas-tro-skop'ik), a . [ gastros- copy + ic .] Of or pertaining to gastroscopy. gastroscopy (gas-tros kō-pi), n. [ γαστήρ (γαστρ-), stomach, + σκοπεῖν , look after.] In med., an examination of the abdomen in order gastrosplenic (gas-trō-splē'nik), a . στήρ (γαστρ-), stomach, + σπλήν, the spleen.] Gastrosplenic ligament or omentum, the fold of peri- Pertaining to the stomach and the spleen. - toneum by which the spleen is attached to the stomach. gast rost egal (gas-tros'te-gal), a. [As gastro- stege + -al.] Covering the belly, as the ven- tral secutes of a snake; pertaining to the gas- trosteges. gastrostege (gastro-stēj), n. [ γαστρ- ), stomach, + στέγος , a roof.] One of the scales or scutes which cover the abdomen of a snake from the head to the tail; an abdominal scute or scutellum. Snakes seldom have on the belly many small scales like those of the back and sides, being usually furnished instead with short, wide, transverse gastrosteges which reach from side to side, and are im- bricated, the hind edge of one overlapping the fore edge of the next succeeding. By muscular action when the snake is wriggling the whole series of gastrosteges stand somewhat on edge, so that their sharp hind borders catch on the slightest inequality of the surface, over which the snake thus glides as if pushed along by numberle little feet. That such is the action of the gastrosteges may be inferred from the ineffectual writhing of a snake when placed on a perfectly smooth surface, as a plate of gla , The last gastrostege, technically called the preanal or post abdominal , is usually bifid, or otherwise modified. Scutes somewhat like gastrosteges cover the under side of the tail, and are known as urosteges . See urostege. gastrostomize (gas-tros'tō-miz), v . t .; pret. and pp . gastrostomized , ppr. gastrostomizing . [ στόμα , the mouth.] In surg ., to subject to the operation of gas- trostomy. Gastrostomus (gas-tros'tō-mus), n. [NL. (Gill and Ryder, 1883), Lyomeri and family Eurypharyngida , having an eel-like form and enormously developed jaws, six or seven times as long as the rest of the skull, supporting a great gular pouch like a pelican's. The type species is named G. bairdi . It is an inhabitant of the lantic near the American coast. gastrostomy (gas-tros'tō-mi), n. [ γαστρ- ), stomach, + στόμα , mouth.] In surg., the operation of forming an artificial opening into the stomach, for introducing food when it cannot pa through the gullet, on account of obstruction or stricture. gastrotomic (gas-trō-tom'ik), a . [ gastrotomy + -ic.] Pertaining to gastrotomy. gastrotomy (gas-trot'ō-mi), n. [F. gastroto- mie, Gastrovascular system, in Acaleph a . See the extract. The principal digestive cavity [of acalephs] seldom re- mains single, but grows out into secondary cavities, which have the character of pouches, or of canals.. acce ory spaces of the digestive cavity, included with the trö-lā'shon), n. [ fh , cavity of the morula, or blasto gastrula + -ation .] In embryol., the for- mation of a gastrula; cœle; eo, blastopore, or aperture of invagination; ch , dd , large blasto mer meres of the hypoblast, inclosed in small blastomeres of the epiblast. the proce whereby a germ is converted from a morula or a blastula into a gastrula. In most IMG:content-2134.png:[blocks in formation] Gastrulation, following Segmentation of the Vitellus or Egg-cleavage of three kinds of Holoblastic Ova, or those which undergo total cleavage, seen in perpendicular cro -section through median plane of primitive intestinal cavity: e, outer or epiblastic or ectoderm ce cells (skin-layer), light; 4, inner or hypoblastic or endoderm cells (intestinal layer), dark. (No nutritive yolk in these eggs; none advanced enough to show any mesoblastic cells or mesoderm.) In all, same letters mark same parts: c, the egg, ovum, cytula, or parent-cell; 1, cleavage-cells, blastomeres, or segment ell a; m, mulberry-germ or morula; b, vesicular germ or blastula; g, germ-cup or gastrula; s, cleavage-cavity, blastocæle, or hollow of blastulation; a, primitive intestinal cavity, archenteron, or hollow of gastrulation; o, primitive mouth, archæostoma, or blastopore. Figs. 1-6. Total, equal, and primordial egg-cleavage of the lowest true vertebrate ( Branch ios tom a ), resulting in a palingenetic or bell gastrula. I, cytula (archicytula); 2, cleavage stage of 4 cells; 3, morula (arch i morula) of many cells; 4, blastula (arch i blastula); 5, same undergoing gastrulation by inversion, invagination, or emboly; 6, gastrula (arch i gastrula). Figs. 7-11. Total but unequal egg-cleavage of an amphibian (frog), resulting in a modified or hood gastrula. 7, cytula (amphicytula); 8, cleavage stage of 4 cells; 9, morula (a mph i morula) already in proce of blastulation; ro, blastula (amphiblastula) completed; 11, gastrula (a mph i gastrula), still showing traces of blastular stage. Figs. 12-17. Total but unequal egg-cleavage of a mammal (woman), resulting in another modified a mph i gastrula or hood gastrula. 12, cytula; 13, cleavage stage of 2 cells; 14, same, of of 4 cells; 15, morula beginning t der go gastrulation without actual blastulation; 16, gastrulation further advanced (theoretically corresponding to the blastulæ of figs. 4, 5, and 10); 17, gastrulation completed (and to be followed, not preceded as in the other cases, by blastulation, or the formation of a blastodermic vesicle). (From Haeckel's "Evolution of Man.") to un IMG:content-2135.png:[blocks in formation] ( γαστρ- ), stomach, + ουρά, tail, + -an.] the stomatopod ous crustaceans. One of