“…Various studies, physiological, pharmacological , histological and electron microscopical, lend support to the notion that the movement of ureteral smooth muscle is either myogenic in its control, or neurogenic (Boyarsky , et al, 1966;Dualte-Escalante, et al, 1969;Kaplan, et al, 1968;Lapides, 1948;McLeod , et al, 1973;Melick, et al, 1961;O'Conor and Dawson-Edwards, 1959;Shulman , 1974Shulman , , 1981Wein, et al, 1972aWein, et al, , 1972bWeiss, et al, 1978). The question of wheter the ureter is innervated or not is still controversial.…”