246 



THE HUMAN ZODT. 



tracts pushes down the abdominal viscera lying against its 

 under side, these have to make room for themselves by 

 pushing out the soft front of the abdomen, which accord- 

 ingly protrudes when the diaphragm descends. Hence 

 breathing by the diaphragm is indicated on the exterior by 



FIG. 71. 



PIG. 71. Torso of the Statue 

 known as Venus of Milo. 



FIG. 73. 



PIG. 72. Paris Fashion, May, 

 1880. 



movements of the abdomen, and is often called " abdominal 

 respiration," as distinguished from breathing by the ribs, 

 called "costal" or "chest breathing." In both sexes the 

 diaphragmatic breathing is the more important, but, as a 

 rule, men and children use the ribs less than adult women. 



Why does the abdomen protrude during an inspiration? What is 

 meant by abdominal respiration? Why? What is costal respira 

 tion? Which form of breathing is most developed in women? 



