Till. All CIIAN1SM.S <i| Dli 





stomach has become filled, peristaltic t.. lake tl 



origin aboul the middle of the bod) of the stomach, and I 

 towards the pylorus. Above the region al which thesi 

 thai is, the cardiac half of the bod) of the stomach and all 

 fundus- there are no waves, bul as digestion proc iwly 



and steadily contrad on the mass of food. Thi lied cardiac pouch 



does not, however, diminish in size bo rapidly a> the : the bod) 



the stomach over which the peristaltic wav< passing ilar 



fibers of the walls of this pari of the stomach sometimes called the 

 gastric tube contrad tonically, bo thai it becomes tubular in form, 

 with the full cardiac pouch al the lefl and abi loric p 



of the 'l 



it with i I in 



tion al the right. The latter portion meanwhile does not diminish much 

 in size, although the peristaltic waves travelii 

 nounced. As will be clear from the figure, thi n outl 



on until the cardiac pouch has become practically empty and th< 

 has been all moved along the now tubular portion of the bod) 

 pyloric vestibu 



Prom this description it is evidenl thai the (u- 

 end is to serve as a reservoir for the food, which, 

 of the walls, is gradually delivered into the gastric t 

 peristalsis it is carried towards the pyloi 



The time required for the peristaltic v 

 of origin to the pylorus is considerably h 



