Human physiology . in DIGESTION IN THE MOUTH AND STOMACH 187 tambour connected with a pneumograph. The distension of theexploring balloon is regulated by raising or lowering the cylinderwhich is fixed in a PIG. gi. Oscillations of tone in cardiac stomach, complicated by more rapid contractions and passive respiratory movements, recorded from dog, as in Fig. (JO. (Ducceschi.) Time tracingmarks intervals of 5 sec. When the sound is passed into the cardiac, fundic, or middleregion of the stomach in a state of comparative rest, slow, irregularcontractions, slight in degree, are observed,
Human physiology . in DIGESTION IN THE MOUTH AND STOMACH 187 tambour connected with a pneumograph. The distension of theexploring balloon is regulated by raising or lowering the cylinderwhich is fixed in a PIG. gi. Oscillations of tone in cardiac stomach, complicated by more rapid contractions and passive respiratory movements, recorded from dog, as in Fig. (JO. (Ducceschi.) Time tracingmarks intervals of 5 sec. When the sound is passed into the cardiac, fundic, or middleregion of the stomach in a state of comparative rest, slow, irregularcontractions, slight in degree, are observed, which are probablyautomatic oscillations of tonicity in thegastric muscles (Fig. 60). In a period ofgreater motor activity, other more rapid,simple contractions appear along the lineof this slow primary wave, which are com-parable with those that commonly appearin plain muscle (Fig. 61). These oscilla-tions of tonus and contractions vary con-siderably in duration and intensity; theyare never regular and rhythmic. Theprimary waves on an average last 50-60sees., the secondary 15-30 sees. If the glass cylinder be somewhatraised so as to increase the swelling of theballoon, and with it the distension of thegast
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectphysiology, bookyear1
