ORGANS OF DIGESTION 



141 



Fig. yib. — Lacteals and Portal System of Dog. 

 a. Inferior mesenteric vein; b, gall-bladder; c, cecum; d, duodenum; e, esopha- 

 gus; i, parotid gland; j, jejunum; /, branches of portal vein in liver; lu, branches 

 of trachea and pulmonary artery in the lung; m, ilium; ol, colon; p, pancreas; 

 s, spleen; st, stomach; th. thoracic duct into which empty the white tubes, the 

 lacteals. 



