Testes are extra abdominal in position. Which of the following is the must appropriste reason

Options

A. Narrow pelvis in males
B. Special protection for testes
C. Prostate glaned and seminal vesicles occupy maximum space.
D. 20-`25^(@)C` lower than the normal body temperature.

Answer

**Step-by-Step Solution:**

1. **Understanding the Position of Testes**: The testes are located outside the abdominal cavity, specifically in the scrotum. This position is referred to as "extra abdominal."

2. **Identifying the Function of Testes**: The primary function of the testes is to produce sperm and hormones, particularly testosterone. For optimal sperm production, a specific temperature is required.

3. **Temperature Requirement for Sperm Production**: Sperm production (spermatogenesis) occurs best at temperatures slightly lower than the normal body temperature. The ideal temperature for this process is about 2 to 2.5 degrees Celsius lower than the body temperature.

4. **Evaluating the Options**:
- **Option A (Narrow pelvis in males)**: This does not directly relate to the position of the testes.
- **Option B (Special protection for testes)**: While protection is important, it is not the primary reason for their external position.
- **Option C (Prostate gland and seminal vesicles occupy maximum space)**: This is not relevant to the positioning of the testes.
- **Option D (20 to 25 degrees lower than the normal body temperature)**: This option is incorrect in terms of temperature range. The correct range is 2 to 2.5 degrees lower, which is essential for sperm development.

5. **Conclusion**: The most appropriate reason for the extra abdominal position of the testes is to maintain a temperature that is lower than the normal body temperature, which is crucial for effective spermatogenesis. Therefore, the correct answer is **Option D**.

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