The given diagram shows different stages of the reproductive cycle and its hormonal control in a human female. Hormone X and hormone Y are identified as
Correct answer: A. Luteinizing hormone, progesterone
- A. Luteinizing hormone, progesterone
- B. Luteinizing hormone, Follicle Stimulating hormone
- C. Follicle stimulating hormone, progesterone
- D. Follicle stimulating hormone, luteinizing hormone
Explanation
X is a pituitary hormone that is secreted for ovulation to occur, so it's LH. Y is an ovarian hormone that increases endometrial thickness in the secretory phase and starts to secrete after ovulation has occurred, so it's progesterone. So option A is correct.Options B, C, and D give incorrect combinations of hormones.
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About Menstrual Cycle
The menstrual cycle covers the coordinated changes in the ovaries and uterus, including menstruation, follicular growth, ovulation and corpus luteum formation. It links follicle-stimulating hormone, luteinizing hormone, oestrogen and progesterone with endometrial changes, and distinguishes the ovarian cycle from the uterine cycle and the hormonal events of pregnancy.
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