Menstrual cycle

Topic

The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. It consists of the ovarian cycle, which controls the release of eggs, and the uterine cycle, which prepares the lining of the uterus to receive an embryo. These coordinated cycles typically recur monthly in females of reproductive age unless interrupted by pregnancy or lactation.