THE HUMAN BODY. 



CHAPTER I. 



THE GENERAL STRUCTURE AND ARRANGEMENT OF 

 THE HUMAN BODY. 



Human Physiology is that department of science 

 which has for its object the discovery and accurate de- 

 scription of the properties and actions of the living 

 healthy human body, and the detection of the uses, or 

 (as physiologists call them) the functions, of its various 

 parts. Physiologists endeavor to find out what the 

 body, as a whole, does while alive, and what each part of 

 it does, and how it does it; also under what conditions 

 the work of the body is best performed; and, in connec- 

 tion with this last aim, to furnish the basis of Hygiene, 

 the science which is concerned with the laws and condi- 

 tions of health. 



is human physiology? What is a function? What do 

 physiologists endeavor to discover ? What is meant by Hygiene ? 



I 



