postovulatoriska

Postovulatoriska refers to the phase of the menstrual cycle that occurs after ovulation. This period is also commonly known as the luteal phase. It begins immediately following the release of an egg from the ovary, which is ovulation. The luteal phase is characterized by the development of the corpus luteum, a temporary endocrine structure formed from the ruptured follicle. The corpus luteum produces hormones, primarily progesterone and some estrogen, which are crucial for preparing the uterus for a potential pregnancy.

The levels of progesterone rise significantly during the postovulatoriska phase, thickening the uterine lining (endometrium) to make it receptive to implantation of a fertilized egg. If fertilization and implantation do not occur, the corpus luteum begins to degenerate approximately 10-14 days after ovulation. This degeneration leads to a sharp drop in progesterone and estrogen levels. The decline in these hormones triggers the breakdown of the uterine lining, resulting in menstruation, the shedding of the endometrium, and the start of a new cycle. If pregnancy does occur, the developing embryo produces human chorionic gonadotropin (hCG), which signals the corpus luteum to continue producing progesterone, thus maintaining the pregnancy. The duration of the postovulatoriska phase is generally consistent, typically lasting about 14 days, although minor variations can occur.