60 



PHf SIOLOGY FOR NURSES 



Absorption' from the stomach seems to be slight, even 

 water passing into the duodenum almost at once. Al- 

 cohol, however, is readily and rapidly absorbed. 



Chyme is denned as "the semiliquid mass of partly 

 digested food passed from the stomach into the duo- 

 denum." It contains: (1) digested protein in the form 

 of peptones or proteoses; (2) carbohydrates which have 

 been partly digested by plyalin; (3) fat warmed and 









Fig. 14. Cross section of pancreatic tubule (modified from Sabotta). 



mixed in an emulsion but otherwise not appreciably 

 changed; (4) undigested proteins and carbohydrates; 

 and (5) indigestible substances which enter the duo- 

 denum late and are not proper constituents of chyme 

 but are mixed with it. 



Pancreatic and Intestinal Digestion 



The product of stomach digestion meets, in the in- 

 testines, with three digestive fluids; i.e., pancreatic 



