ovulasjonsperioden

Ovulasjonsperioden, also known as the menstrual cycle, is a physiological process in which an egg is released from the ovary of a female reproductive system. This cycle is essential for the potential of reproduction and is regulated by a complex interplay of hormones, primarily follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The average menstrual cycle lasts about 28 days, but it can vary from 21 to 35 days among individuals.

The menstrual cycle is divided into several phases: the menstrual phase, the follicular phase, ovulation, and the luteal phase. The menstrual phase begins with the shedding of the uterine lining (endometrium) and lasts for about 3 to 7 days. The follicular phase follows, during which FSH stimulates the growth of follicles in the ovaries. One of these follicles will mature and release an egg, a process known as ovulation, which typically occurs around day 14 of a 28-day cycle.

After ovulation, the remaining follicle transforms into the corpus luteum, which produces progesterone. This hormone prepares the uterine lining for potential implantation of a fertilized egg. If fertilization does not occur, the corpus luteum degenerates, leading to a decrease in progesterone levels and the shedding of the uterine lining, marking the start of the next menstrual cycle.

Factors such as age, overall health, and hormonal imbalances can influence the length and regularity of the menstrual cycle. Irregular ovulation can lead to infertility, and understanding the menstrual cycle is crucial for various aspects of reproductive health, including contraception, pregnancy planning, and the diagnosis of menstrual disorders.