The largest accessory reproductive gland in man is the ________ .
prostate gland
The male accessory glands include the seminal vesicles, prostate, bulbourethral gland. These glands secrete fluids that enter the urethra. Among them, the prostate gland is the largest and it pours down alkaline secretions into the semen as it passes down through the urethra. It neutralises the acid in a female's vagina.