What event occurs during ovulation?

During ovulation, the event that occurs is the rupture of the Graafian follicle. This is a critical phase in the menstrual cycle where a mature follicle releases an egg (ovum) into the fallopian tube. The Graafian follicle, which has been developing during the follicular phase, becomes large and is stimulated by luteinizing hormone (LH). When LH levels peak, it triggers the follicle to break open, releasing the egg for potential fertilization.

The significance of this event lies in its essential role in reproduction. Once the egg is released, it is capable of being fertilized by sperm, leading to potential conception. This process is central to female fertility and is a key concept in understanding the reproductive cycle.

In contrast, the shedding of the endometrial lining, formation of the corpus luteum, and travel of the egg through the fallopian tube are related processes but occur at different points in the menstrual cycle. The shedding occurs during menstruation, the corpus luteum forms after ovulation, and the egg traveling through the fallopian tube happens after it has been released.