Anatomy Embryology 1e688f42 Lower 1/3 of vagina is formed by: A Mesonephric duct B Paramesonephric duct C Sinovaginal bulbs D Genital swellings High-Yield Explanation Ans. C. Sinovaginal bulbsUpper 2/3 of vagina- formed by Paramesonephric DuctLower 1/3 of vagina - formed by Urogenital Sinus (Sinovaginal Bulb of Endodermal Sinus)