CUAPTEK .1 

 THE MECHANK B OF RE8PJB 



THE MECHANISM BY WHICH THE CHANGES I PACITY OF 

 THE THORAX AND LUNGS ARE BROUGHT ABO 



Bi k. i. . r i-. a MH 



that take place in tl 

 thorax daring respiratioD are b 

 diaphragm, sternum, and vertebra 

 considered separately. 



The Movements ol the R: 



attached directly to t aum b; 



the twelfth pairs pro 

 truth thej are indirectly atta 

 the ' I The el< ■ I h and t h elfti 



may be considered a pi 

 the thoracic 



Bach pair of r jether w it h r 



ms a riii^r, the plane of •■ I 

 Th- J articnlatioi 



uii- [n the form* 



which (it int 



, whil< 

 ribs arc flat Eacl I 

 little more backwai 

 ribs t to thi 



rtifiilatit.ii of the lipp< 



in thr spii 

 movement in thi 



:" the rih * 

 hich ti 



thr 

 oflV.-f 



