io6 THE POCKET ANATOMY 



flumbar branches, 

 right spermatic, 

 (ovarian in female). 



The inferior vena cava ri S ht renal - 

 receives 



right supra- renal, 

 inferior phrenic, 

 hepatic. 



CARDIAC VEINS : Vena cordis magna : from apex, up an- 

 terior interventricular groove to base of ventricles, curving 

 to left side and back part of heart, empties into coronary 

 sinus ; guarded by two valves ; receives posterior cardiac and 

 left cardiac veins. 



Venae cordis mediae (posterior cardiac) : from apex up pos- 

 terior interventricular groove, terminating in coronary sinus, 

 guarded by valves. 



Venae parvae (anterior veins) : three or four small branches 

 from anterior surface of right ventricle, emptying into lower 

 part of right auricle. 



Venae Thebesii : drain muscular substance, opening into 

 right auricle. 



Bight or small coronary : from back of right auricle and 

 ventricle, runs in auriculo-ventricular groove to open in right 

 end of coronary sinus. 



The coronary sinus : is the part of the great cardiac vein 

 which is placed in the left auriculo-ventricular groove. Is 

 i inch in length, and opens in the right auricle, the opening 

 being guarded by the Thebesian valve. Receives branches 

 as above, and a small straight vein at the back of the left 

 auricle, the oblique vein of Marshall, the remnant of the left 

 superior vena cava of the foetus. 



Pulmonary : four in number ; commence in capillary net- 

 work upon the pulmonary alveoli, uniting to form a trunk for 

 each lobe ; the one of the middle lobe of the right lung unites 

 with the one from the superior lobe, hence there are two 

 veins from each side. No valves. Carry arterial blood and 

 empty in to the left auricle, the left veins crossing the descend- 

 ing thoracic aorta. 



Relations at the root of the lung : 



From A dove Down. 

 From Before Back. reside. Left Sid*. 



Vein. Bronchus. Artery. 



Artery. Artery. Bronchus. 



Bronchus. Vein. Vein. 



