All are effects of sympathetic stimulation except: (A) Increased conduction velocity, (B) Increased hea rate, (C) Increased refractory period, (D) Increaed contractility of hea
Answer is C. Stimulation of the sympathetic cardiac nerves speeds the depolarizating effect of IH and the rate of spontaneous discharge increasesThis is possible by decrease in the refractory period Ref: Ganong's Review of Medical Physiology Twenty-Third Edition Page No:492