DIGESTIVE SYSTEM OF THE SHEEP 



473 



the pillar. The left coronary grooves do not extend to the curvatures. There is 

 no dorsal coronary groove on the right side, but the ventral one is verj^ distinct and 

 extends to the curvature. The arrangement of the pillars corresponds to these 

 external features. The papillae of the rumen are relatively large and somewhat 

 tongue-like; the largest are about a fourth of an inch (ca. 6 mm.) in length. The 

 dorsal part is papillated, not glabrous, as in the ox. The lateral part of the rumino- 

 reticular fold ends half an inch or more (ca. 1.5 cm.) behind the cardia. The 

 reticulvun is relatively larger than in the ox. Its ventral part curves more back- 

 ward and less to the right than in the ox. The parietal surface extends forward as 



Poste- 

 rior 



groove of 

 rumen 



Retimlo- 

 'abomasal 

 groove 



Pylorus 



Fig. 406. — Stomach of Sheep; Right View. 

 From photograph of specimen hardened in situ: Dotted line indicates position of spleen. 



far as the sixth rib or intercostal space, and is related to the diaphragm and liver. 

 The fundus lies on the sternal part of the diaphragm and is in contact behind with 

 the abomasum. The oesophageal groove is disposed in general like that of the ox, 

 and is about four to five inches (ca. 8 to 10 cm.) long. 



There are however, several marked differences in the arrangement of the groove. Its ven- 

 tral part c™ backward so that the reticulo-omasal orifice is directed dorsally and l^es m ^ t^^^^" 

 verseXe about an inch (ca. 2-3 cm.) behind one passmg through the cardia These differ- 

 Inces are correlated with the small size of the omasum and the large size of the reticulum 

 Tubulo alveoSr glands have been found by Thanhofer and others; they occur chiefly m the 

 subCcous tissue at the angle of junction of the hps and bottom of the groove. 



The folds surrounding the cells of the reticulum are only 2-3 mm. in height. 



