. A text-book of human physiology . Fig. 53 —Casts of the ventricular cavities of the ox heart in rigor mortis, after Worm-Miillerand Sandborg. A, cavity of the right ventricle; B, of the left. Two-thirds natural size. the great arteries and so far as the pericardium will permit, is movable in dif-ferent directions. If one observes the heart of a mammal in the usual supine position of theanimal in experimentation, the diastolic heart is flattened somewhat in theanterior-posterior direction, while its transverse diameter is increased. Undersuch circumstances one finds that the long axis and the
. A text-book of human physiology . Fig. 53 —Casts of the ventricular cavities of the ox heart in rigor mortis, after Worm-Miillerand Sandborg. A, cavity of the right ventricle; B, of the left. Two-thirds natural size. the great arteries and so far as the pericardium will permit, is movable in dif-ferent directions. If one observes the heart of a mammal in the usual supine position of theanimal in experimentation, the diastolic heart is flattened somewhat in theanterior-posterior direction, while its transverse diameter is increased. Undersuch circumstances one finds that the long axis and the transverse diametershorten in systole, while the sagittal axis becomes longer. In the natural position of the body the heart is supported for the most partby the lungs; these are to be looked upon as air cushions which influence theform of the diastolic heart only to a slight extent. In the natural position ofthe animal therefore the base of the heart must be more circular than in thesupine position with the chest open. By means
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectphysiology, bookyear1
