. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. iMMP THE GIBCULATION OF THE BLOOD. 985 I simply unsup- WITHIN. le heart of the lible of graphic it the details of dumben oC the hewt. mework, with metallic 1. Both auricular and ventricular systole are sudden, but the latter is of very much greater duration. 2. While the chest wall feels
. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. iMMP THE GIBCULATION OF THE BLOOD. 985 I simply unsup- WITHIN. le heart of the lible of graphic it the details of dumben oC the hewt. mework, with metallic 1. Both auricular and ventricular systole are sudden, but the latter is of very much greater duration. 2. While the chest wall feels the ventricular systole, the au- riculo-ventricular valves shield the auricle from its shock. 3. During diastole in both chambers the pressure rises gradually from the inflow of blood; and the auricular contrac- tion produces a brief, decided, though but slight rise of press- ure in the ventricles. 4. The onset of the ventricular systole is rapid, its maximum pressure suddenly reached, and its duration considerable. The relations of these various events, their duration, and the corresponding movements of the chest wall, may be learned by a study of the above tracing which the student will find worthy of his close attention. it, though they as of the cardiac I tracings in the V BVtwiriole. Bight rentricle. OirdlM impulM. , from the interior of the ChauTceu Mid Meresr). i« in the order from top dr Tertieal Itnce I and n. M of srcMure within the mtifle, lie mninteiwnae III well ilMwii. There ie rarrants the fol- Thb Cabdiac Sounds. Two sounds, differing in pitch, duration, and intensity, may be heard over the heart, ^Len the chest is opened and the heart listened to by means oi' a stethoscope. These sounds may also be heard, and present the same characters when the heart is auscultated through the chest wall; hence the cardiac im- pulse can take no essential part in their production. The sounds are thought to be fairly well represenic ^, so far as the human heart is concerned
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1880, bookyear1889
