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HUMAN PHYSIOLOGY 



CHAP. 



vents the reflow of the blood into the auricle. The aorta 

 is the largest artery of the body. It gives off branches 

 that go to the head and arms, and then it bends down 

 and gives off branches to muscles, to the stomach, the 

 liver, the spleen, the kidneys, and to the intestines. 

 In the lower part of the abdomen it divides into two 



Descewtfa 



FIG. 71. Showing the course of blood through the heart (Zuppke). 



large branches called the right and left common iliac 

 arteries. The largest branch of each of these is called 

 the external iliac, and farther down it is called the 

 femoral, which carries the blood to the leg and foot. 



The arteries continue to divide until the vessels are 

 smaller than the finest hair. The blood is now in the 

 capillaries, from which some of it exudes to become part 



