CIRCULATION 401 



White corpuscles may pass through the walls of the capillaries 

 and thus get into the lymph spaces, from whence they may pass 

 out with the returning lymph, by way of the lymph capillaries, 

 to rejoin the blood, through the lymph system. 



The lymph thus stands between the blood stream in the capil- 

 laries, and the living cells of the body. The blood leaves the heart 



O 



C. CtRAOH DtOflDE 



F. FOOT3 //V SOLUTION' 



IV. WASTE MATTER 



conPusei.es 



FIG. 130. Diagram to show relation between blood, lymph, and cells. 



by one route, the arteries, and returns part way by two, namely 

 the veins and the lymph system. These unite before reaching the 

 heart again. 



COLLATERAL READING 



Civic Biology, Hunter, pp. 313-328; Studies "in Physiology, Peabody, 

 pp. 117-158; Elementary Physiology, Huxley, pp. 119-147; Applied 

 Physiology, Overton, pp. 156-191; Physiology for Beginners, Foster and 

 Shore, pp. 78-107; General Physiology, Eddy, pp. [159-203; Physiology 

 Textbook, Colton, pp. 48-104; Human Body and Health, Davison, pp. 106- 

 130; High School Physiology, Hughes, pp. 154-178. 



SUMMARY 

 Function of circulatory system. 



Transportation of food from digestive organs to tissues. 

 Transportation of oxygen from lungs to tissues. 

 Transportation of waste from tissues to lungs and kidneys. 

 Reasons for varying degrees of development. 

 Blood. 



Composition. Plasma: (two-thirds bulk). 

 Serum, carrier of food and waste. 

 Fibrinogen, aids in forming clot. 



