Which gland secretes prostatic fluid?

• A. Vas deferens
• B. Bulbourethral gland
• C. Seminal vesicle
• D. Prostate gland

Answer: (D)

Prostatic fluid comes from the prostate gland, a gland in the male reproductive system that adds a specific alkaline, enzyme-rich component to semen. This fluid helps protect and activate sperm as they enter the acidic environment of the female reproductive tract and provides certain enzymes that support sperm function. Other structures mentioned are not glands that produce prostatic fluid: the vas deferens is a duct that carries sperm, not a secretory gland; the bulbourethral glands secrete a clear mucus for lubrication and urethral buffering; and the seminal vesicles contribute a large portion of the seminal fluid rich in fructose and prostaglandins. Since prostatic fluid is the product of the prostate gland, that gland is responsible for secreting it.