THE NUTRIENTS AND DIGESTION 



315 



enlarges to form a pouch called the crop (ingluvies), which 

 acts as a storage for the food eaten much as does the paunch 



Fig. 172 



CECUM 



LOWEIi MANDIBLE 

 TONGUE 



OPENING TO TRACHEA 



MUSCLES CONTROLLING 

 TONGUE 



OPENING INTffGULLET 



GALL-BLADDER. 

 BILE DUCT 



6IZZAR.D 



PANCREAS 

 DUODENAL LOOP 



The digestive tract of the fowl. 



