340 



THE RESPIRATION 



Fig. 117. Diagram to show the effect of clinical displacements of the diaphragm on the costal 



angle. 



Line 1. Normal position of diaphragm. Costal margins move out during inspiration. 

 Line 2. Position of diaphragm in general cardiac enlargement. Costal margin from ensiform to 



ninth rib moves toward median line. 

 Line 3. Position of diaphragm in left-sided cardiac enlargement. Left costal margin is fixed or 



moves in during inspiration. 

 Line 4. Position of diaphragm in right-sided cardiac enlargement. Right costal margin is fixed 



or moves in during inspiration. 

 Line 5. Costal margin. (From T. Wingate Todd.) 



