ii8 ELEMENTS OF PHYSIOLOGY 



(As it leaves that organ the blood is the purest in the body.) (See 

 Plate V.) 



25. How does alcohol interfere with the process of oxidation? 



26. What keeps the blood in circulation between the beats of the 

 heart? 



27. What are the functions of the capillaries? 



28. Why does a cool draft in the house cause a cold quicker than a 

 cool wind out of doors? 



29. Why do we perspire freely after drinking freely of cold water? 



30. How can an extensive burn cause death by congestion of the 

 lungs ? 



31. What causes the difference between the hard hand of the black- 

 smith and the soft hand of the clerk? 



32. Why does rubbing wear out the leather of the shoe, but the 

 friction of the shoe upon the toe cause the skin to grow thicker and 

 to form a corn ( 188)? 



33. What is the effect upon the circulation of traveling upon the 

 cars or in a vehicle? 



