Ostium of Fallopian tube
Uterus and uterine tubes. The ostium is seen centrally from the fimbriae
1: Ovary 2: Medial surface 3: Lateral surface 4: Free border 5: Mesovarial margin 6: Tubal extremity 7: Uterine extremity 8: Oviduct (fallopian tube) 9: Ostium of fallopian tube 10: Infundibulum of fallopian tube 11: Fimbriae of fallopian tube 12: Ovarian fimbria 13: Ampulla of fallopian tube 14: Isthmus of fallopian tube 15: Uterine part of fallopian tube 16: Uterine opening of fallopian tube

The ostium of the Fallopian tube is the opening in the infundibulum of uterine tube into the abdominal cavity. In ovulation, the oocyte enters the Fallopian tube through this opening.

It is surrounded by fimbriae, which help in the collection of the oocyte.

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