The longest phase in menstrual cycle is

Options

A. Proliferative phase
B. Secretory phase
C. Menstrual phase
D. Ovulatory phase

Answer

**Step-by-Step Solution:**

1. **Understand the Menstrual Cycle**: The menstrual cycle is a cyclic process that occurs in females, involving ovulation and menstruation. It consists of four distinct phases.

2. **Identify the Phases**: The four phases of the menstrual cycle are:
- Menstrual Phase
- Follicular Phase (also known as Proliferative Phase)
- Ovulatory Phase
- Secretory Phase (also known as Luteal Phase)

3. **Duration of Each Phase**:
- **Menstrual Phase**: This phase lasts from day 1 to day 5 (approximately 5 days).
- **Follicular Phase**: This phase lasts from day 6 to day 13 (approximately 8 days).
- **Ovulatory Phase**: This phase occurs on day 14 (1 day).
- **Secretory Phase**: This phase lasts from day 15 to day 28 (approximately 14 days).

4. **Determine the Longest Phase**: By comparing the durations of each phase:
- Menstrual Phase: 5 days
- Follicular Phase: 8 days
- Ovulatory Phase: 1 day
- Secretory Phase: 14 days

The Secretory Phase is the longest phase, lasting approximately 14 days.

5. **Conclusion**: Therefore, the longest phase in the menstrual cycle is the Secretory Phase.

**Final Answer**: The longest phase in the menstrual cycle is the Secretory Phase (Option 2).

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