162 



SKELETON OF THE PIG 



third to the last; the anterior ones are inchned backward, the posterior ones for- 

 ward. The last cervical is recognized by the great length of its spine (ca. 10 cm. 

 in the adult), the absence of the ventral plate of the transverse process, and the flat- 

 ness of the body, which bears a pair of small facets on its posterior margin for the 



Fig. 164, — Fourth Cervical 

 Vertebra of Pig; Lat- 

 eral A'iKW. 



1, 1', Anterior and pos- 

 terior ends of bod^-; 2, arch; 

 3, foramen of arch; 4, anterior 

 articular process ; 5, spinous 

 process; 6, . ventral branch of 

 transverse process. 



Fig. 165.— Sixth CERvir'AL Vertebra 

 OF Pig; Anterior View. 

 1, Body; 2, transverse process; 

 3, foramen transversarium ; 4, addi- 

 tional foramen of arch; 5, articular proc- 

 ess; 6, arch; 7, spinous process. 



Fig. 166. — Seventh Cervical. 

 Vertebra of Pig ; Lateral 



"\'lET\". 



1, 1', Anterior and posterior 

 ends of body; 2, facet for head of 

 first rib ; 3, arch ; 4, transverse 

 process; 5, 5', articular processes; 

 6, spinous process; 1 (number on 

 bone), foramina of arch. 



Fig. 11)7. — Atlas of Pig; Dorsal View. 

 1, Dorsal tuberosity; 2, alar foramen; 3, wing; 

 4, intervertebral foramen; 5, dorsal arch; 6, ventral 

 tubercle; 7, surface for dens. 



5 4 



Fig. 168. — Atlas of Pig; Anterior View. 

 1, Dorsal tuberosity; 2, wing; 3, a]ar foramen; 4, ante- 

 rior articular cavity; 5, ventral tubercle. 



heads of the first ribs. It has foramina transversaria, and usually two foramina in 

 each side of the arch. 



The dorsal tuberosity of the atlas is large. The ventral tubercle is long, com- 

 pressed laterally, and projects back under the axis. The wing is flattened and 

 bears a posterior tuberosity. The foramen transversarium passes through the 



