Final answer:
Ovulation is triggered by a surge in LH (Luteinizing Hormone), which is crucial for egg development, ovulation induction, and hormone production in the ovaries.
Step-by-step explanation:
Ovulation is triggered by a surge in certain pituitary hormones. Specifically, LH (Luteinizing Hormone) is responsible for the induction of ovulation. The role of LH in the female reproductive system is multifaceted, including the stimulation of ova development, induction of ovulation, and triggering the production of other hormones such as estradiol and progesterone.
After ovulation occurs, the ruptured follicle is transformed into the corpus luteum, which produces large amounts of progesterone. This hormone is critical for the establishment and maintenance of pregnancy and causes the endometrium to thicken in preparation for possible implantation.