The Digestive System. 



81 



comprising the hard palate, and the membranous, or soft palate. 

 These structures also form the floor of the accessory respiratory 

 tracts of the nose, the posterior aperture being thus carried back- 

 ward to a point more directly above the aperture of the larynx. 



Fig. \2. The stomach, liver, and portal connections. Stomach: c. body; 

 cr, cardia; f, fundus; py. pyloric limb; du. duodenum. Liver: ir. renal impres J 

 sion; la, lp, anterior and posterior lobules of the left lobe; la', lp'. anterior and 

 postetior lobules of right lobe; lc, caudate lobe; v. wall bladder. Vessels: 

 d', opening of common bile duct (.shown as transparency); h. hepatic artery; 

 p, petal vein; vc, tributaries of coronary vein. The ramifications of the portal 

 vessels are indicated right (d) and left (sj, 



The chief features of the pharynx depend on its relation as a 

 common or general portion of the digestive tube with the tubes of 

 the respiratory system. It is divisible into an oral portion, 

 representing the direct connection of the oral cavity with the 

 oesophagus, a dorsal or nasal portion, connected with the nasal 



