462 



RESPIRATORY SYSTEM OF THE OX 



THE LUNGS 



The difference in size between the two hmgs is greater than in the horse, the 

 right huig weighing about half as much again as the left one. The average weight 



D I aphraiiiriaf/c 



Fig. 367. — Richt Lung of Ox, Cost.^l, Surf.\ce. 

 Organ hardened 'in situ. 



Fig. 308. — Right Lung of Ox, Mediastinal Aspect. 

 Hardened in situ. 1, Left bronchus; 2, puhnonary veins; 3, pulmonary artery. 



of the lungs is about IY2 pounds (ca. 3 to 4 kg.); they form about y-jir of the 

 body weight. 



They are divided into lobes by deep fissures (Incisurae interlobares). The 

 left lung is divided into three lobes, named from before backward apical, 



