1 84 



ANATOMY AND PHYSIOLOGY 



LEFT VENTRICLE 



Mitral orifice and bicuspid valve. 

 Opening for aorta and aortic valves. 



Trabeculae carneae and the tendinous cords connecting them 

 with the bicuspid valve. 



THE COURSE OF THE BLOOD THROUGH THE HEART 



Resume. The blood enters the right auricle, passes down into 

 the right ventricle, and out through the pulmonary artery to the 



Left carotid artery 



Left subclavia 

 artery 



Aorta 



Pulmonary artery 



Pulmonary veins 

 from left lung 



Left auricle 



Coronary vessels 



Anonyma 



Superior vena cava 



Pulmonary veins 

 from right lung 



Right auricle 



Inferior vena cava 



- Coronary artery 



FIG. 125. POSTERIOR SURFACE OF HEART. 

 Pulmonary veins bringing pure blood to left auricle. (Morris' Anatomy.) 



lungs; it returns by the pulmonary veins to the left auricle, passes 

 down into the left ventricle, and out through the aorta to every 

 part of the body, from which it is returned by two large veins to 

 the right auricle again. 



