Lower 1/3 of vagina is formed by
Lower 2/3rd of vagina formed from sinovaginal bulb which comes from endoderm of urogenital sinus. Upper 1/3rd of vagina is derived from fused paramesonephric duct. Mesonephric duct forms the collecting pa or ductular pa of male reproductive system. Mesoderm of Mullerian duct is basically paramesonephric duct.
Mesonephric duct
Paramesonephric duct
Sinovaginal bulb
Mesoderm of mullerian duct
Development of GU system and Neuro-vascular supply of pelvis & perineum