THORAX AND ABDOMEN OF THE HORSE 



13 



M. longus colli 



CEsophagus. 

 Lung 

 Trachea. 

 Truncus 



brachiocephalicus. 

 Vena cava cranialis, 



Mediastinum 



Aorta. 



CEsophagus. - 



Lung. 



Vena cava 



caudalis. 



Cava! fold of 



right pleura. 



Mediastinum. - 



Diaphragm. - 



Lung. 

 Aorta. 



CEsophagus. 

 + Bronchi. 



A. pulmonalis. 



Heart. 



Pericardium. 



Fig. 5. — Diagrams to illustrate the arrangement of the Pleurae in transverse 



secticms of the Thorax. 



^ = Cranial to the Heart. B = On a level with the Heart. C = Caudal to the Heart. 



The Pleurae are represented by the red lines. 



