THE SKELETAL SYSTEM 



49 



The digit of the hind limb is similar to that of the fore The 

 principal differential features lie in the third phalanx, which has a 

 less oblique wall, a narrower toe, and a sole surface that is more 

 concave. The distance between the angles or wings is also less. 



THE SKELETON OF THE OX 



There are only a few marked differential features between the 

 bones of the horse and those of the ox. 



Processus cornus . 



Nasal bone 



Angle of 

 mandible 



Mental foramen Mandible 



Pig. 8. — Skull of ox; lateral view: A, parietal bone; B, temporal bone; C, 

 occipital bone; D, palatine bone; E, maxilla; F, malar bone; G, lacrimal bone; 

 H, premaxilla; 1-11, processes; 12; infraorbital foramen; 13 and 14, processes 

 of mandible. (Sisson, Anatomy of Domestic Animals.) 



In the horned breeds of cattle the frontal bones present the horn 

 processes or "horn-cores" for the support of the horns. 



The premaxillse are thin and fiat in front and have no alveoli 

 since the canine and upper incisor teeth are absent (Fig. 8) . 



The vertebral formula for the ox is C7Ti 3 L 6 S B Cyi8-2o. 



The ribs numWSfg/ffe&tfeteja /l^eflGSSO/Tlhey are longer, wider, 

 flatter, and less curved than in the horse. 



