978 



THE ORGANS OF VOICE AND RESPIRATION. 



i.e., the most fixed part and thus, implicating the great vessels, is frequently fatal. It would 

 seem a priori a most unusual injury, and its exact mode of causation is difficult to interpret. 

 The probable explanation is that immediately before the compression is applied a deep inspira- 

 tion is taken and the lungs are fully inflated ; owing then to spasm of the glottis at the moment 



Eparf. 

 ranch tis 



Pulm. 

 veins 



(treat 

 coron. rei 



Foramen for 

 (esophagus 



FIG. 539. Thoracic contents seen from behind. (Joessel.) 



of compression, the air is unable to escape from the lung, which is not able to recede and con- 

 sequently gives way. 



fcr I In -tYT^ V 'T iety ' Whe r the ] wou , n(1 in th * lg is produced by the penetration of a 



broken rib, both the pleura costalis and pulmonalis must necessarily be injured, and consequently 



r taken into the wounded air-cells may find its way through these wounds into the cellular 



