Which phase immediately follows ovulation?

• A. Menstrual phase
• B. Follicular phase
• C. Luteal phase
• D. Pre-menstrual phase

Answer: (C)

The phase that immediately follows ovulation is known as the luteal phase. This phase occurs after a mature ovum is released from the ovary and lasts until the start of menstruation. During the luteal phase, the corpus luteum, which forms from the remnants of the follicle that released the egg, produces hormones, particularly progesterone. This hormone is crucial for preparing the uterine lining for a potential implantation of a fertilized egg.

If fertilization does not occur, the corpus luteum degenerates, leading to a drop in progesterone levels and triggering the start of menstruation, which marks the transition to the menstrual phase. However, if fertilization and subsequent implantation take place, the luteal phase supports the early stages of pregnancy.

The follicular phase occurs before ovulation and is characterized by the maturation of follicles in the ovaries. The pre-menstrual phase is generally considered a term that encompasses the end of the luteal phase leading into menstruation but is not an officially recognized phase in the menstrual cycle. Thus, the luteal phase is correctly identified as the phase that follows ovulation.