EXPERIMENTAL PHYSIOLOGY 



B. Carefully cut away the pericardium from the blood 

 vessels, and the fat from the surface of the heart. Locate 



i 



FIG. 35. Heart in position with pericardium removed (Human): Tr, trachea; 

 L, lungs; RA, LA, right and left auricles; RV, LV, right and left ventricles; Ao, 

 aorta (two branches); SVC, IVC, superior and inferior venae cavse; PA, pulmonary 

 artery. 



the aorta, vence cavce, pulmonary veins and artery; and push 



bristle seekers through these blood vessels into the heart. 



C. Examine the outside of the heart and locate the follow- 



