What is produced by the ovaries to support the menstrual cycle?

• A. Prolactin
• B. Estrogen
• C. Cortisol
• D. Insulin

Answer: (B)

The ovaries primarily produce estrogen, which plays a crucial role in supporting the menstrual cycle. Estrogen is responsible for regulating various functions, such as the thickening of the uterine lining during the follicular phase of the cycle. This hormone facilitates the development of the ovarian follicles and prepares the body for potential pregnancy after ovulation.

In addition to estrogen, the ovaries also produce progesterone, but since the question specifically inquires about what is produced by the ovaries to support the menstrual cycle and the provided answer focuses on estrogen, it highlights the importance of this hormone in the cycles of menstruation and female reproductive health.

Prolactin is chiefly associated with milk production and has a different role in the body, while cortisol is a steroid hormone related to stress response, and insulin is crucial for regulating blood sugar levels. None of these are directly involved in regulating the menstrual cycle in the way that estrogen is.