In which phase of menstrual cycle Graafian follide transform as the corpus luteum.

Options

A. Luteal
B. Proliferation
C. Follicular
D. Growth

Answer

**Step-by-Step Solution:**

1. **Understanding the Menstrual Cycle Phases**: The menstrual cycle consists of several phases: the follicular phase, ovulation, and the luteal phase. Each phase has distinct hormonal and physiological changes.

2. **Identifying the Role of Graafian Follicle**: The Graafian follicle is a mature ovarian follicle that is ready to release an egg during ovulation. This follicle develops during the follicular phase of the menstrual cycle.

3. **Recognizing Ovulation**: Ovulation is the process where the Graafian follicle releases the egg (ovum) into the fallopian tube. This event marks the transition from the follicular phase to the luteal phase.

4. **Formation of Corpus Luteum**: After ovulation, the remnants of the Graafian follicle transform into the corpus luteum. This transformation occurs during the luteal phase of the menstrual cycle.

5. **Function of Corpus Luteum**: The corpus luteum secretes hormones, primarily progesterone, which is essential for maintaining the uterine lining for a potential pregnancy. If fertilization does not occur, the corpus luteum will degenerate after about 10 to 14 days.

6. **Conclusion**: Therefore, the phase of the menstrual cycle in which the Graafian follicle transforms into the corpus luteum is the luteal phase.

**Final Answer**: The Graafian follicle transforms into the corpus luteum during the luteal phase of the menstrual cycle.

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