<prompt> Vaginal epithelium is derived fromEndoderm of urogential sinusMesoderm of urogential sinusEndoderm of gential ridgeMesoderm of gential ridge  <response>: Vaginal epithelium is derived from the endoderm of the urogenital sinus Sinovaginal bulbs fuse to form vaginal plate which breaks down in centre to form lumen of vagina Peripheral cells of vaginal plate forms the vaginal epithelium Hymen is formed by invagination of the posterior wall of the urogenital sinus Ref: Essentials of embryology and bih defects; Ninth edition; chapter 13 