812 



THE ENDOCRINE ORGANS, OR DUCTLESS GLANDS 



luted tubules in much the same way as certain diuretics, like diuretin. This 

 renal hormonic action of pituitrin, would appear to be analogous with that o. 

 secretin on the epithelium of the pancreas. Another reason for believ- 



Fig. 199. Tracing showing the action of pituitrin on the uterine contractions and blood pressure 

 in a dog. Made by Barbour's method. (From Jackson.) 



ing that the secretory hormone is independent of that producing vaso- 

 dilatation of the renal vessels is the fact that a repeated dose of pituitrin, 

 although, as we have seen, it usually has a depressor action on the blood 



