Fig- 73- HEART AND ROOT OF LUNGS FROM BEHIND. a, a, a, a, Right pulmonary 

 artery and its branches, b, b, Upper and lower divisions of right bronchus, c, c, c, Right 

 pulmonary veins, d, Vena azygos major. <?, Right bronchus, f, Trachea, g, Left bron- 

 chus, h, Innominate artery, i, Left common carotid artery, j, Left subclavian artery. 

 k, Descending aorta. /, Left innominate vein, m, Left pulmonary artery, n, Left bron- 

 chus, o, Left pulmonary vein, p, Posterior surface of left auricle, q, Orifice of inferior 

 vena cava. r, Left ventricle, s, Right ventricle, t, Coronary sinus. 



