What is ovulation, menstruation, and the hormones involved in the menstrual cycle?

Here are the answers to your questions:

1. Ovulation is the release of an egg from the ovary. This event itself is very quick, typically lasting only a few minutes. The egg is then viable for fertilization for approximately 12-24 hours after its release. It usually occurs around the 14th day of a 28-day menstrual cycle.

   • Ovulation itself is a rapid event, with the egg being viable for approximately 12-24 hours.

2. Menstruation is regulated by hormones.

3. Menstruation is the monthly shedding of the uterine lining (endometrium) through the vagina. This occurs when a fertilized egg does not implant in the uterus, marking the beginning of a new menstrual cycle.

4. The main hormones involved during the menstrual cycle are:

   • Follicle-Stimulating Hormone (FSH)
   • Luteinizing Hormone (LH)
   • Estrogen
   • Progesterone