<unk>  is a major cause of female infertility. Blocked<unk> <unk> s are unable to let the ovum and the sperm converge, thus making fertilization impossible.<unk> <unk> s are also known as oviducts, uterine<unk> s, and salpinges (singular salpinx).
Fallopian tube obstruction
Primary ovarian insufficiency
Mullerian anomalies
Blighted ovum
Gonadal tissue neoplasm
Anovulation
Male accessory gland infection
Ovarian remnant syndrome