Final answer:
Luteinizing hormone (LH) is the hormone responsible for triggering ovulation. It is produced by the anterior pituitary gland after being stimulated by GnRH from the hypothalamus and leads to the release of a mature egg from the ovary.
Step-by-step explanation:
The hormone that triggers ovulation is luteinizing hormone (LH). LH is a pituitary gland hormone that has a crucial role in the reproductive system. In women, LH stimulates the ovaries to secrete estrogen and to release an egg during ovulation. For men, LH stimulates the testes to secrete testosterone. According to the reproductive cycle, the hypothalamus releases gonadotropin-releasing hormone (GnRH) which activates the anterior pituitary to produce LH and follicle-stimulating hormone (FSH). Together, LH and FSH stimulate the maturation of the growing follicles in the ovary. When the levels of LH peak, this leads to the ovulation of a mature egg from the dominant follicle.
The hormone that triggers ovulation is luteinizing hormone (LH). LH is a pituitary gland hormone that stimulates the ovaries to secrete estrogen and progesterone, leading to the release of an egg from the mature follicle.