Question

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

• A. Ureter
• B. Vas deferens
• C. Vasa efferentia
• D. Urethra

Answer 1

The Correct Option is D

The question asks for the shared terminal duct of the reproductive and urinary systems in human males. The correct answer is Urethra. Let's understand why, by discussing each option and explaining their functions:

1. Ureter: The ureter is a tube that carries urine from the kidney to the bladder. It is part of the urinary system but has no role in the reproductive system. Thus, it is not the shared terminal duct.
2. Vas deferens: This is a duct that transports sperm from the epididymis to the ejaculatory duct. It plays a significant role in the male reproductive system, but it is not shared with the urinary system.
3. Vasa efferentia: These are a series of ducts in the male reproductive system that connect the rete testis with the initial section of the epididymis. Like the vas deferens, they are part of the reproductive system and do not serve as a common duct with the urinary system.
4. Urethra: The urethra is the correct answer as it serves as a common channel for both urine and semen in males. The male urethra is part of both the reproductive and urinary systems, making it the shared terminal duct.

Thus, the correct answer is Urethra. The male urethra performs the dual function of excreting urine from the body as part of the urinary system and ejaculate semen in the reproductive process.