ANATOMY IN A XUTSHELL. 



233 



Diaphragm. (Plate LXXII.) 



The word diaphragm is a Greek word meaning a partition wall. It is a 

 musculo-fibrous septum, situated between the upper one-third and the lower 

 two-thirds of the trunk. It separates the thoracic cavity from the abdominal 

 cavity/ It is the floor of the former and the roof of the latter, its general shape 



PLATE XCTII. 



CLAVICULAR NOTCH 

 STERNO HYOID, 

 STERNO THYRO 



FIRST COSTAL 

 CARTILAGE 



TRIANGULARIS STERNI 



ENSIFORM APPENDIX 



Posterior View of Sternum. 



is somewhat like that of an umbrella or an irregular dome. The upper surface 

 of it is covered with the right and left pleura, he! ween the two pleura' it is cover- 

 ed with the pericardium. Its circumference is elliptical in form, highesl at the 

 ensiform cartilage. The highest part of all the diaphragm is od the righl side 



