76 THE HUMAN BODY. 



6, Where does the blood flow fastest ? Where slowest ? 



7, Who discovered and proved the circulation of the blood ? 



8, What are the walls of the capillaries ? 



9, Name some points in which arteries and veins differ. 



10, How can we tell, in case of a wound, whether the blood comes 

 from an artery, or from a vein ? 



11, Is the flow from a vein as easily stopped as that from an 

 artery ? 



12, Are veins and arteries strong ? 



SECTION VI. 1. What is the pulse ? 



2, Is there any pulse in the capillaries ? in the veins ? How does 

 the blood flow from an artery ? How from a vein ? How from the 

 capillaries ? 



3, What does the pulse tell us ? 



SECTION VII. 1. Is the supply of blood to the same part always 

 the same ? 



2-4, How is it made greater or less ? 



SECTION VIII. 1- What is the immediate effect of alcohol on 

 the heart ? 



2, How are the smaller blood-vessels affected by alcohol ? 



3, What change does alcohol sometimes cause in the substance 

 of the heart ? 



4, What change does alcohol sometimes cause in the blood- 

 vessels ? What is apoplexy ? 



5, How does alcohol cause it ? 



