168 ANSWERS TO PRACTICAL QUESTIONS 



Because an extra quantity of blood is thrown into that part 

 of the body. 



9. Why does a fat man endure cold better than a lean 

 one? 



Fat is a good non-conductor of heat, and helps to preserve 

 the uniform temperature of the body. 



1 0. IVJiy does one become thin during a long sickness ? 



By absorption, the fat of the body is taken up and used to 

 supply the wants of the system. The old flesh being renewed 

 with new, vigorous material, a person often has better health 

 after such a wasting sickness than previous to it. 



11. If 'hat would you do if you should come home " ivet 

 to the skin " ? 



One should (1) go into a warm . room ; (2) remove all wet 

 garments ; (3) if chilled, take a hot, full or foot bath, and by 

 gentle friction restore the circulation ; (4) put on dry clothing. 



12. Wit en the cold air strikes the face, why does it first 

 blanch and then flush ? 



The muscles and blood-vessels of the surface are contracted 

 by the cold, and the blood is driven back toward the heart. 

 The reaction which ensues forces the blood again toward the 

 skin, and this flushes with the incoming tide. The face is 

 therefore first whitened and then reddened. 



13. What must be the effect of tight lacing upon the 

 circulation of the blood ? 



It must, by contracting the blood-vessels, impede the flow 

 of the blood, and by decreasing the quantity furnished the 

 various organs, injure their action. Thus, finally, it will im- 

 pair the quality of the blood. 



14. Do you knoiv the position of the large arteries in 

 the limbs, so that in case of accident you could stop the 

 floiv of blood ? 



These can be located by examining the cut in Physiology, 

 page 104, or any good chart of the circulation. 



