462 



RESPIRATORY SYSTEM OF THE OX 



THE LUNGS 



The difference in size between the two lungs is greater than in the horse the 

 right lung weighing about half as much again as the left one. The average weioht 



Di a^hra </ ma t/c 

 tohe 



~<c. '', 



Fig. 367. — Right Lung op Ox, Costal Surface. 

 Organ hardened 'in situ. 



~ - L ine erf 



lobe 



Fig. 368. — Right Lung op Ox, Mediastinal Aspect. 

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



of the lungs is about 73^ pounds (ca. 3 to 4 kg.) ; they form about ^-^ of the 

 body weight. 



They are divided into lolx's l)y (l(M>p fissures (Incisurip interlobares). The 

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



