Relationship between Action Potential and Phasic Contraction in Ureter Strip by Electrical Stimulation Contraction in Ureter Strip by Electrical Stimulation

1. The relationship between action potential and contraction and the effect of repetitive stimuli on contraction of ureter strip have been examined by means of the sucrose-gap method and the mechano-electronic transducer. 2. The action potential and phasic contraction of ureter were in the manner of all-or-none response and its refractory of stimulation, the configuration of action potential and phasic contraction was changed slightly. 3. When increased the intensity of stimulation, the configuration of action potential and phasic contraction was changed slightly. 4. Repetitive stimuli affected on the responsibility of ureter strip. In general, the mean response porcentage decreased sttply sith a high frequent stimulation.