Which of the following does not occur between 15-28 days fo menstrual cycle?

Options

A. Premenstrual phase
B. Luteal phase
C. Secretory phase
D. Proliferation phase

Answer

To solve the question "Which of the following does not occur between 15-28 days of the menstrual cycle?", we need to analyze the different phases of the menstrual cycle and identify which one falls outside the specified range.

### Step-by-Step Solution:

1. **Understand the Menstrual Cycle Phases**:
- The menstrual cycle is typically divided into several phases: the menstrual phase, follicular phase, ovulation, luteal phase, and premenstrual phase.

2. **Identify the Days**:
- The question specifies the days 15 to 28 of the menstrual cycle.
- Ovulation typically occurs around day 14.

3. **Luteal Phase**:
- After ovulation (around day 14), the luteal phase begins and lasts until the start of menstruation, which is typically around day 28.
- Therefore, the luteal phase occurs between days 15 to 28.

4. **Secretory Phase**:
- The secretory phase occurs during the luteal phase as well. It involves the preparation of the endometrium for potential implantation of a fertilized egg.
- This phase also occurs between days 15 to 28.

5. **Premenstrual Phase**:
- The premenstrual phase is the time leading up to menstruation, which typically starts around day 28.
- Thus, this phase also occurs within the 15 to 28-day range.

6. **Proliferative Phase**:
- The proliferative phase occurs before ovulation, typically from day 1 to day 14 of the menstrual cycle.
- Therefore, this phase does not occur between days 15 to 28.

7. **Conclusion**:
- The phase that does not occur between days 15 to 28 is the **Proliferative Phase**.

### Final Answer:
The answer is **D. Proliferative Phase**.

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