Final answer:
Luteinizing hormone (LH) is the hormone that signals ovulation by triggering the release of an egg from the ovary. It, along with FSH, plays a crucial role in the maturation of ovarian follicles during the menstrual cycle.
Step-by-step explanation:
Luteinizing hormone (LH) is the hormone that signals ovulation by triggering the release of an egg from the ovary. It, along with FSH, plays a crucial role in the maturation of ovarian follicles during the menstrual cycle. The hormone that signals ovulation is luteinizing hormone (LH).
During the ovarian cycle, both LH and follicle-stimulating hormone (FSH) are critical for the maturation of follicles in the ovaries. While FSH initiates follicular growth, it is the surge in LH that triggers ovulation—the release of the egg from the mature follicle. Post ovulation, the hormone progesterone prepares the endometrial lining of the uterus for potential implantation in anticipation of pregnancy.