part of develops from female genital disc adult female reproductive system genital chamber FBbt:00004919 fly_anatomy.ontology vagina An elongate muscular pouch, the anterior part of which is the uterus, where eggs are fertilized, and the posterior part of which is the vagina, where insemination takes place during copulation (McQueen et al., 2022). It opens posteriorly through the vulva (McQueen et al., 2022). FBbt:00004925 uterus ventral ectoderm derivative female-specific anatomical entity multicellular structure