382 



The Heart. 



A. anonyma 



A. subclavia sinistra 



-A. carotis communis sinistra 



Arcus aortae 



V. cava superior 



Aorta ascendens 



Atrium dextrum , 



A. coronaria 

 [cordis] dextra" 



Conus 

 arteriosus ~" 



Sulcus 

 coronarius- 



Ventriculus dexter 



Atrium sinistrum 



A. coronaria [cordis] 

 sinistra 



.liamus circumflexus 



Ramus des- 

 \ cendens anterior 



Sulcus 



-longitudinalis 



anterior 



_Ventriculus 

 sinister 



>^ 



428. The arteries of the heart, viewed from above and in front. 



(The ostium arteriosuni doxtruin and the a. pnhnonalis have been removed.) 



The a. coronaria [cordis] dextra (ri-^ht conman arterv) (see also Fig. 429) arises 

 ui the right sinus aortae [Valsalva(>J (see Figs. 426 and 433), runs at first between the right 

 auricle and the conus arteriosus, then in the sulcus coronarius first to the right and then upon 

 the facies diaphragmatiea to tli(^ left; finally it bends around into the sulcus longitudinalis 

 posterior and, as the ramus dcsccadens posterior, arrives cl(is(> to the apex of the heart. It 

 gives off larges branches to the right ventricle, small branches to the right atrium and (from 

 the r. descendens posterior) to tlie loft ventricle. 



