THE THORACIC CAVITY AND PLEURA 



461 



THE THORACIC CAVITY AND PLEURA 



The thoracic cavity is relatively small; it is especially short ^lorsally and is 

 diminished laterally by 'the mode of attachment of the diaphragm to the ribs {vide 

 Myology) The endothoracic fascia is better developed than in the horse, and is 



Fxo 366-CKOss-sKCTxo. or Thokax o. Shekp, P.ssx.o Thko.oh Mxo..k o. Fxpth P.xk o. Rxbs, Postekxob 



View. 

 1 1' Lun^s- ^ 2' bronchi; S, d', pulmonary arteries; 4. thoracic aorta; 5, oesophagus; 6, lymph gland; 



distinctly elastic. The pleura is also thick, and there f^^^^ P^^^^J^^f J^ ^^1 

 mediastinum. The pleural sacs are more unequal in extent than m th^ ti^^^f; ^^^ 

 the ventral part of the mediastinum is further to the left; m front of the pericar 

 dium it lies for the most part on the left wall of the chest. 



