. Diseases of the heart and thoracic aorta. Fig. I.—Heart of Dugong seen anteriorly: shows bifid apex, s, right auricle,y, right ventricle, t, left auricle, r, left ventricle. «, aorta giving off innominates,left carotid and left subclavian arteries, v, pulmonary artery bifurcating and pro-ceeding to right and left lungs.—{After Owen.) Fig. 2. Apex of the human heart (half the natural size) showing a deep cleft,A, between the two ventricles. Preliminary Considerations. 3 The function of the auricle is to receive the blood which iscarried to it by the great veins, to store up that blood for abr
. Diseases of the heart and thoracic aorta. Fig. I.—Heart of Dugong seen anteriorly: shows bifid apex, s, right auricle,y, right ventricle, t, left auricle, r, left ventricle. «, aorta giving off innominates,left carotid and left subclavian arteries, v, pulmonary artery bifurcating and pro-ceeding to right and left lungs.—{After Owen.) Fig. 2. Apex of the human heart (half the natural size) showing a deep cleft,A, between the two ventricles. Preliminary Considerations. 3 The function of the auricle is to receive the blood which iscarried to it by the great veins, to store up that blood for abrief period { the period corresponding to the ventricularsystole), and to transmit it to the ventricle. The function ofthe ventricle is to propel the blood, which it receives fromthe auricle, into the great artery which arises from it, andthence through the arterial system and round the vascularcircle.^ The backward flow of blood from the ventricle to theauricle is partly prevented by the auriculo-ventricular valvesegments, partly,
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectheart, bookyear1884
