Final answer:
The luteal phase of the ovarian cycle occurs from day 15-28 and involves the production of hormones by the corpus luteum, which prepares the uterus for a potential pregnancy.
Step-by-step explanation:
The phase that occurs from day 15-28 of the ovarian cycle is known as the luteal phase. After ovulation, the ruptured follicle transforms into a structure called the corpus luteum, which is crucial for the production of hormones. The corpus luteum secretes both estrogen and progesterone, which play essential roles in the preparation of the uterus to accept a fertilized egg. If fertilization does not occur, the corpus luteum degenerates, leading to the menstrual phase. Progesterone is particularly important as it facilitates the regrowth of the uterine lining and inhibits the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH), preventing the development of further eggs and follicles while it is elevated.
The luteal phase occurs from day 15-28 of the ovarian cycle. This phase starts after ovulation, when the Graafian follicle transforms into a structure called a corpus luteum. The corpus luteum secretes progesterone, which suppresses the production of follicle-stimulating hormone (FSH) and luteinizing hormone (LH), and stimulates the buildup of the uterine lining. If the egg is not fertilized, the luteal phase ends and the menstrual cycle enters its next phase.