In the fertile human female approximately on which day of the menstrual cycle does ovulation take place ?

Options

A. Day 14
B. Day 18
C. Day 1
D. Day 8

Answer

**Step-by-Step Solution:**

1. **Understanding the Menstrual Cycle**: The menstrual cycle in a healthy fertile human female typically lasts about 28 days. It consists of four distinct phases: menstrual phase, follicular phase, ovulatory phase, and luteal phase.

2. **Identifying the Phases**:
- **Menstrual Phase**: This phase lasts for approximately 3 to 5 days and marks the beginning of the cycle.
- **Follicular Phase**: This phase begins on the first day of menstruation and involves the development of follicles in the ovaries.
- **Ovulatory Phase**: This is the phase where ovulation occurs, which is the release of the ovum (egg) from the ovary.
- **Luteal Phase**: This phase follows ovulation and involves the formation of the corpus luteum from the ruptured follicle.

3. **Determining the Ovulation Day**: Ovulation typically occurs around the midpoint of the menstrual cycle. For a standard 28-day cycle, the midpoint would be around day 14.

4. **Conclusion**: Therefore, in a fertile human female, ovulation takes place approximately on the 14th day of the menstrual cycle.

**Final Answer**: Ovulation occurs approximately on the 14th day of the menstrual cycle.

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