88 



THORAX 



lower border of the coronary sinus. The oblique vein descends 

 on the posterior wall of the left atrium and ends in the 

 upper border of the coronary sinus. The small cardiac vein 

 (O.T. right coronary) runs along the lower margin of the 

 heart with the marginal branch of the right coronary artery, 



Right atrio- 

 ventricular opening 



Superior vena cava 



Reflection of serous pericardium 



Right auricle 

 Interatrial furrow 

 Left atrium 



Left auricle 



Crista terminalis 



Fossa ovali 

 Valve of inferior 



vena cava 

 Inferior vena cava 



Left atrio- 

 ventricular opening 



\ 



Coronary sinus 



FIG. 41. The Anterior Aspect of the Atrial Part of the Heart. The 

 atria have been removed from the ventricles. The ventricular portion 

 of the same heart is depicted in Fig. 38. The specimen was hardened 

 in situ. 



curves round the right border of the heart, in the coronary 

 sulcus, and ends in the right extremity of the coronary sinus. 

 The anterior cardiac veins are small vessels which ascend 

 along the anterior surface of the right ventricle and terminate 

 directly in the lower and anterior part of the right atrium. 

 The vence cordis minima are small veins which pass from the 

 substance of the heart, and more particularly from the walls 

 of the right atrium and ventricle, and open, by small orifices, 

 into the cavity of the right atrium. The orifice through 

 which the great cardiac vein opens into the coronary sinus is 



