The main function of the prostate gland is to produce and store the prostate fluid, a light colored fluid with slightly alkaline properties (pH 7.29). This fluid is meant to nourish and protect sperm in the semen (making it more liquid).
Prostatic fluid, along with the seminal fluid produced by the seminal vesicles and the sperm produced in the testis, form semen. Prostatic fluid constitutes up to about 30% of the semen.
