Feilised ovum reaches uterine cavity by :

Feilization takes place at the ampullary end of the Fallopian tube, the ovum is then transpoed by the contractions of the tube into the uterine cavity, aided by the fluid current impaed from ciliated epithelium. The morula enters the uterine cavity about 3 days after feilization. Reference : Williams Textbook of Obstetrics 24th edition page 89