INFLUENCE OF ESTRONE ON THE ELECTRIC CHARACTERISTICS AND THE MOTILITY OF UTERINE MUSCLE

Abstract

Injs. of estrone produce an increase in electric excitability and in the resting potential in the cat''s uterus. Responses of the isolated uterus to electric shocks are local during anestrus, but conducted during estrus. These differences, which are due to changes in excitability, explain why the motility of the uterus is different during estrus and anestrus. Rapidly conducted contraction waves and slowly moving contraction rings are explained as due to the conduction of muscular impulses.