THORAX AND ABDOMEN OF THE HORSE 



13 



M. longus colli 



CEsophagus, 

 Lung. 

 Trachea. 

 Tnincus 



brachiocephalicus. 

 Vena cava cranialis. 



Mediastinum 



Aorta. 



(Esophagus. 



Lung. 



Vena cava 



caudalis. 



Cava! fold of 



right pleura. 



Mediastinum. 

 Diaphragm. 



CEsophagus. 

 Bronchi. 



A. pulmonalis. 



Heart. 



Pericardium. 



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



sections of the Thorax. 



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



The Pleurae are represented by the red lines. 



