206 



THE HUMAN BODY. 



by a deep groove from the ventricles, Vd and Vs. A more 

 shallow furrow runs between the ventricles and indicates 

 the'position of the internal longitudinal septum.-- On the 



FIG. 80. The heart viewed from its dorsal aspect. Aid, right aTj_rlole , cf, 

 inferior vena cava; az, azygos vein ; Fc, coronary vein. The remauhr.g letter? 

 of reference have the same signification as in Fig. 79: , 



dorsal aspect of the heart (Fig. 80) similar points may be 

 noted, and on one or other of the two figures the great 

 vessels opening into the cavities of the heart may be seen. 

 The pulmonary artery, P, arises from the right ventricle, 



