THE CESOPHAGUS THE STOMACH 417 



lar tissue derived from the palatinus and palato-pharyngeus. The vault of the 

 pharynx (Fornix pharyngis) is divided by a median fold of mucous membrane 

 which is a direct continuation of the septum nasi. On either side of this is an in- 

 fundibulum in which the Eustachian tube opens. 



THE CESOPHAGUS 

 The oesophagus is short and nearly straight. It has (according to Rubeh) a 

 potential caliber of nearly 3 inches (ca. 7 cm.) at either end, and about 1^^ inches 

 (ca. 4.2 cm.) in its middle part.' The muscular coat, except near the cardia, is 

 striated. There are mucous glands in the submucosa to about the middle of the 

 tube. 



Fig. 317. — Abdominal Vif5CER.\ of Young Pig, Ventr.'Il Aspect. 

 The stomach was very large in this subject. 



THE STOMACH 

 The stomach is large and pyriform. Its average capacity is about 13^ to 2 

 gallons (ca. 5.7 to 8 liters). When full it extends backward to the last left inter- 



1 It is usually stated that the cardiac end is funnel-shaped, but it is not so in formalin 

 hardened cadavers nor in frozen sections. The hiatus oesophagus is a long sht in the right crus of 

 the diaphragm, and the terminal part of the oesophagus, which hes in it, is flattened transversely. 

 27 



