

Fig. 70. DISSECTION OF THORAX. a, Right ventricle. 6, Left ventricle, c, Right 

 auricle, rf, Pulmonary artery, e. Ascending aorta. /, Superior vena cava. g. Left coro- 

 nary artery and vein, h, Right marginal artery and vein ; anterior branch of right coro- 

 nary artery, i, Pericardium ; inner surface. Note the difference between the external 

 and internal appearance of the pericardium. Also the notch at the apex of the heart 

 where the ventricles meet. 



