<prompt> Vestibule of vagina is derived from?Genital ridgeWolffian ductMullerian ductUrogenital sinus  <response>: The vulval vestibule or vulvar vestibule or vestibule of vagina is a pa of the vulva between the labia minora into which the urinary meatus urethral opening and the vaginal opening open. Its edge is marked by Has line. It represents the distal end of the urogenital sinus of the embryo 