Which two hormones produced by the ovaries influence the menstrual cycle?

Which two hormones produced by the ovaries influence the menstrual cycle?

• A. Testosterone and Estrogen
• B. Progesterone and Estrogen
• C. Prolactin and Oxytocin
• D. FSH and LH

Answer: (B)

Two hormones produced by the ovaries influence the menstrual cycle: estrogen and progesterone. Estrogen rises in the first half of the cycle to stimulate follicle growth and thicken the endometrium, helping it prepare for a possible pregnancy. After ovulation, progesterone increases, transforming the lining into a secretory state to support implantation if fertilization occurs. If pregnancy doesn’t happen, levels fall, leading to shedding of the lining and the start of a new cycle. The other options don’t fit because testosterone is only a smaller ovarian hormone with limited, non-primary regulatory roles in the cycle; prolactin and oxytocin are mainly involved in lactation and labor; FSH and LH are pituitary hormones that regulate the cycle but are not produced by the ovaries.

Two hormones produced by the ovaries influence the menstrual cycle: estrogen and progesterone. Estrogen rises in the first half of the cycle to stimulate follicle growth and thicken the endometrium, helping it prepare for a possible pregnancy. After ovulation, progesterone increases, transforming the lining into a secretory state to support implantation if fertilization occurs. If pregnancy doesn’t happen, levels fall, leading to shedding of the lining and the start of a new cycle. The other options don’t fit because testosterone is only a smaller ovarian hormone with limited, non-primary regulatory roles in the cycle; prolactin and oxytocin are mainly involved in lactation and labor; FSH and LH are pituitary hormones that regulate the cycle but are not produced by the ovaries.