Which structure forms the ejaculatory duct with the vas deferens?

Which structure forms the ejaculatory duct with the vas deferens?

• A. Epididymis and vas deferens
• B. Vas deferens and urethra
• C. Vas deferens and seminal vesicle duct
• D. Seminal vesicle and bladder

Answer: (C)

The structure that forms the ejaculatory duct is the union of the ductus deferens with the duct of the seminal vesicle. This short canal runs through the prostate and opens into the prostatic urethra, allowing sperm from the vas deferens and secretions from the seminal vesicle to mix and pass into the urethra during ejaculation. The epididymis feeds into the vas deferens but does not form the ejaculatory duct, the urethra is the outlet rather than the forming structure, and the bladder has no role in creating the ejaculatory duct.

The structure that forms the ejaculatory duct is the union of the ductus deferens with the duct of the seminal vesicle. This short canal runs through the prostate and opens into the prostatic urethra, allowing sperm from the vas deferens and secretions from the seminal vesicle to mix and pass into the urethra during ejaculation. The epididymis feeds into the vas deferens but does not form the ejaculatory duct, the urethra is the outlet rather than the forming structure, and the bladder has no role in creating the ejaculatory duct.