for this purpose the emg was recorded in the antrum while the small intestine ( duodenum and the first part of jejunum ) was perfused with various solutions : tap water ( 5 mosm ) , nacl , mannitol and glucose having an osmotic pressure of 70 , 138 , 275 , 550 or 1100 mosm .
C0021852
small intestine
C0013303
duodenum