The effects of autonomic drugs on the activities of the upper urinary tract were studies with the ureteral perfusion pressure method.It was found that a-adrenergic and M-cholinergic receptors possess excitatory effect on the upper urinary tract while ?-adrenergic receptor possess inhibitory effect.It is likely that a-adrenergic receptor plays a certaion role in the maintenance of the normal activity of the upper urinary tract but both the M-and ?-receptors have a little effects.The effects of the autonomic nervous system and its receptors on the activities of the upper urinary tract were discussed.

The effects of noradrenaline,isoptin.prostaglandin E and indomethacin on the dynamics and the muscloelectrical activities of the ureter were sutdied in dogs.It was found that no-radrenaline exerted excitation on the smooth muscle of the upper ureter,isoptin could remarkably reduce both the electrical and contractile activities of the ureter,prostaglandin E could intensify the activeites of the ureter,and indomethacin could the inhibit the synthesis of intrinsic prostaglandins and in turn relax the smooth muscle of the ureter.