The shared termminal duct of the reproductive and urinary system in the human male is:

Options

A. urethra
B. ureter
C. vas deferens
D. vesa efferentia

Explanation

**Step-by-Step Solution:**

1. **Identify the Systems Involved**: The question asks for the shared terminal duct of the reproductive and urinary systems in the human male. We need to focus on the structures involved in both systems.

2. **Understand the Options**: The options provided are:
- Urethra
- Ureter
- Vas deferens
- Vas deferentia

3. **Analyze Each Option**:
- **Urethra**: This is the duct that carries urine from the urinary bladder and also serves as the passage for semen during ejaculation. Therefore, it is involved in both the urinary and reproductive systems.
- **Ureter**: This is a tube that carries urine from the kidneys to the urinary bladder. It does not have a role in the reproductive system.
- **Vas deferens**: This is part of the male reproductive system, specifically responsible for transporting sperm from the epididymis to the ejaculatory duct. It does not serve a function in the urinary system.
- **Vas deferentia**: This term refers to the plural of vas deferens and does not change the function.

4. **Conclusion**: Since the urethra is the only structure that serves as a terminal duct for both urine and semen, it is the correct answer.

5. **Final Answer**: The shared terminal duct of the reproductive and urinary system in the human male is the **urethra**.

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