THE CIRCULATION' 1 1/ 



5. If the clothing has been accidentally wet and the wet garments 

 cannot be changed for dry ones at once, how can one keep up a good 

 circulation to prevent taking cold ? 



6. Why does the toper have a red nose? 



7. When cold air strikes it, why does the face first blanch and then 

 flush ( 156, 1 60)? 



8. When a person is warm-hearted in the usual sense of the term, 

 is it also true physiologically ? 



9. What is the origin of the term "blue-blooded aristocracy"? 

 When do dark veins in the wrist show most plainly? Of what is 

 dark blood in the body in general a sign ? 



10. Why does a hot foot-bath sometimes relieve a headache? Why 

 should it relieve a cold in the head? 



EXERCISE H 



1 1 . Tight clothing at the waist may cause too much blood in what 

 parts? Does it tend to make the circulation sluggish or active? 



12. Which is more compressible, a vein or an artery ? Does a tight 

 garter interfere more with the flow of blood to the feet or from the feet? 



13. Why are varicose veins so often found in the lower leg? 



14. Why may a sluggish circulation through full veins in the feet 

 as well as want of blood in the feet cause them to be cold ? 



15. Why are students very likely to have cold feet? 



1 6. Why does the body of a person dying by drowning or strangula- 

 tion turn blue? 



17. What would you do in the case of a severe wound in the absence 

 of a surgeon ? 



1 8. What is the object of a collar? Why is it therefore not neces- 

 sary to have the collar as high in front as behind ? Why is it unhealth- 

 ful to have it so? What is the purpose of a cuff? 



19. What is the most serious injury of alcohol to the blood? 



20. In what part of the circulation does the so-called venous blood 

 flow through arteries ? 



EXERCISE HI 



21. Show how life comes by death ( 204). 



22. Can any physiological basis be given for the claims of patent 

 medicine venders that their nostrums "purify the blood"? 



23. What vein begins and ends with capillaries (Fig. 89) ? 



24. What artery takes arterial blood to an organ where it is still 

 further purified, yet is called venous blood when it leaves the organ ? 



