A.Peristalisis caused by ejaculation of semen into vagina
B.Suction pressure exerted by upper portions of fallopian tubes
C.Internal suction by body cavity wall
D.None of these
A.Peristalisis caused by ejaculation of semen into vagina
B.Suction pressure exerted by upper portions of fallopian tubes
C.Internal suction by body cavity wall
D.None of these