DISSECTION OF THE THORAX 



415 



The nerves of the heart may next be studied, as far as they 

 can be made out. 



(a) Anterior coronary plexus (plexus coronarius cordis anterior). 



(b) Posterior coronary plexus (plexus coronarius cordis posterior). 



Cavities of Heart. 



Pull the heart over to the left side so that the right atrium 

 will be fully in view ; open the right atrium by two incisions, 



FIG. 209. 



Areas aortae 

 V. cava superior 

 V. azygos 



Ram us dexter of 

 the A. pulmonalis 

 f 



Transition of the peri- 

 cardium into the epi- 

 cardium on the ante- 

 rior side of the Vv. 

 pulmonales dextrae c" 



Tuberculum interven- 

 osum (Lowed) 

 Limbus fossae ov 

 (Vieussenii) 

 Fossa ovalis 



Transition of the peri- 

 cardium into the 

 epicardium on the 

 V. cava inferior 



Valvula venae cavae (inferioris; 



[Eustachii] ) / 



Valvula sinus coronarii [ThebesiiY 

 Foramina venarium minimarum [Tnebesii] 



Sulcus coronarius 



A. subclavia sinistra 



^--A. anonyma 



../Transition of the pericardium into 

 / the epicardium on the aorta 

 and V. cava superior 



j Adipose folds of the epicardium 

 / A. pulmonalis 



. Septum atriorum 



Auricula dextra 



Conus arteriosus 



-A. coronaria 

 dextra 

 Cuspis anterior 



yalvulae 

 tricuspidalia 



Septum 



ventricu- 



lorum 



Valvulae 



Mm. papillares 



The heart seen from the right side. After hardening in formalin in distention, the right side of 

 the right atrium and ventricle were removed. (After Toldt, Anat. Atlas, Wien, 1900, 2 Aufl., p. 549, 

 Fig. 918.) 



(1) an almost vertical one from in front of the V. cava superior 

 downward and a little backward to the V. cava inferior, and (2) 

 an oblique one from the middle of the vertical incision to the tip 

 of the auricula dextra cordis (0. T. right auricular appendix). 



