PULSE 



53 



cases where as much as two-thirds of the blood is lost, the injec- 

 tion of fluid does no good. The amount to cause the heart's 

 action to continue may be supplied, but the amount of hemoglo- 



FIG. 28. Interior of right auricle and ventricle exposed by the removal of a 

 part of their walls. (From Yeo after Allen Thompson.} 



inner wall 

 flaps of 



been cut; 



7, on aorta near the ductus arteriosus; 8, 9, aorta and its branches; 10, u, left auricle 

 and ventricle. 



As- 



i, superior vena cava; 2, inferior vena cava; 2', hepatic veins; 3, 3', 3", inr 

 of right auricle; 4,4, cavity of right ventricle; 4', papillary muscle; 5, 5', s"> 

 tricuspid valve; 6, pulmonary artery in the wall of which a window has be 



bin necessary for life is lost and this cannot be supplied, 

 phyxiation is the result. 



Pulse. If a finger be placed on any artery in the body there 



