Where is the ovum released from and what path does it take?
Ovulation is the process by which a mature ovum (egg) is released from one of the ovaries. It occurs about midway through the menstrual cycle, usually between days 10 and 14, and is triggered by a surge in luteinizing hormone (LH).
Path of the ovum:
1. Ovary: The ovum is released from a mature ovarian follicle on the surface of the ovary.
2. Fallopian tube: The ovum is swept into the fallopian tube by the fimbriae, finger-like projections at the end of the tube.
3. Ampulla: The ovum travels through the fallopian tube until it reaches the ampulla, the widest part of the tube. This is where fertilization usually occurs if sperm are present.
4. Isthmus: If fertilization does not occur, the ovum continues to travel through the fallopian tube until it reaches the isthmus, the narrow part of the tube.
5. Uterus: The ovum then enters the uterus, where it can implant into the uterine wall and develop into an embryo. If implantation does not occur, the ovum will be shed during menstruation.