OF THE THORAX 



421 



major, and the thoracic duct. Sometimes the vena azygos major is transmitted 

 upward through the right cms. Occasionally some tendinous fibres are pro- 



CESOPH AGUS 



FORAMEN QUADRATUM FOR 

 INFERIOR VENA CAVA 



CENTRAL TENDON, 

 LEFT SIDE 



AORTA 



FIG. 315.- The Diaphragm, seen from above. (Poirier and Charpy.) 



CENTRAL TENDON. 

 RIGHT SIDE 



FIG. 316. The Diaphragm, viewed from in front. (Testut.) 



longed across the bodies of the vertebrae from the inner part of the lower end of 

 the crura, pass behind the aorta, and thus convert the opening into a fibrous ring 



