Select the correct option related to the function regulated by ovaries. 

The correct answer is Menstrual cycle.

Key Points

• The ovaries are responsible for producing hormones such as estrogen and progesterone, which are crucial for regulating the menstrual cycle.
• These hormones control the development and release of eggs (oocytes) from the ovaries during the menstrual cycle.
• The menstrual cycle is typically around 28 days long but can vary from person to person.
• The cycle consists of four main phases: menstruation, the follicular phase, ovulation, and the luteal phase.

Additional Information

• Estrogen: A hormone produced by the ovaries that plays a key role in the development of female secondary sexual characteristics and the regulation of the menstrual cycle.
• Progesterone: A hormone released by the corpus luteum in the ovary that prepares the endometrium for pregnancy if fertilization occurs.
• Ovulation: The process by which an ovary releases a mature egg into the fallopian tube, usually occurring around the midpoint of the menstrual cycle.
• Menstruation: The shedding of the uterine lining, resulting in bleeding, which marks the start of a new menstrual cycle.
• Follicular Phase: The phase of the menstrual cycle during which follicles in the ovary mature, ending with ovulation.