Abstract
The physiological properties of the prostate resemble those of other exocrine glands. The precise functions of the prostate remain obscure but some inferences can be made. The prostate is ideally positioned to block the entrance of pathogens into the reproductive tract by secreting potent biological agents that are bacteriostatic. These substances include metal ions, proteases, and highly charged organic molecules such as spermine. The total contribution to seminal fluid (average 3 mL) made by prostate secretions is about 0.5 mL. The pH of these prostate secretions is relatively alkaline and varies from 6 to 8, possibly to counteract the acidic environment of the urethra and vagina. Seminal plasma may increase sperm motility or survival in the male urethra or female genital tract by buffering mechanisms. Constituents of prostatic fluid participate in the clotting (semenogelins I and II) and lysing (prostate specific antigen) of semen. This clotting, then liquefaction may somehow optimize fertility by allowing an initial higher dwell time in the female reproductive tract. A list of components of prostatic fluid is found in Table 18.1.
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Steers, W.D. (2011). Physiology and Pharmacology of the Prostate. In: Chapple, C., Steers, W. (eds) Practical Urology: Essential Principles and Practice. Springer Specialist Surgery Series. Springer, London. https://doi.org/10.1007/978-1-84882-034-0_18
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