The prostate is a walnut-size exocrine gland of the male reproductive system. It is located just below the urinary bladder where it wraps around the first part of the male urethra. Prostate gland produces a milky fluid that is expelled into the urethra to mix with spermatozoa during ejaculation. The… Continue Reading Benign Prostatic Hyperplasia (BPH) and Treatments, animation.