7fi8 



THE ENDOCRINE ORGANS, OR DUCTLESS GLANDS 



the intestine (in contrast to the inhibiting effect of epinephrine), and of the 

 bladder-ureter musculature. Dilatation of the pupil of the excised frog 



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Fig. 197. — Tracing showing the action of pituitrin on the uterine contractions and blood pressure 

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



eye is produced. The effect of pituitrin on the muscle of the bronchioles 



is shown in Fig. 198 by the diminished excursions of the respiratory tracing. 



The glands on which the pituitrin has the most pronounced action are 



