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Multiple Choice
Which hormone surges to trigger ovulation?
A
Luteinizing hormone (LH)
B
Follicle-stimulating hormone (FSH)
C
Progesterone
D
Estrogen
Verified step by step guidance
1
Understand the role of hormones in the menstrual cycle. The menstrual cycle is regulated by a complex interaction of hormones, primarily estrogen, progesterone, follicle-stimulating hormone (FSH), and luteinizing hormone (LH).
Identify the phase of the menstrual cycle where ovulation occurs. Ovulation is the release of an egg from the ovary and typically occurs around the middle of the cycle, approximately day 14 in a 28-day cycle.
Recognize the hormonal changes that lead to ovulation. Prior to ovulation, there is a surge in luteinizing hormone (LH), which is crucial for triggering the release of the egg from the ovary.
Differentiate between the roles of LH and FSH. While FSH is important for the growth and maturation of ovarian follicles, the LH surge is specifically responsible for triggering ovulation.
Consider the roles of estrogen and progesterone. Estrogen levels rise before ovulation, contributing to the LH surge, while progesterone levels increase after ovulation to prepare the uterine lining for potential pregnancy.