Stephen J. Schueler, M.D.

Prostate Carcinoma Anatomy

To better understand prostate cancer, it helps to understand the anatomy of the prostate gland.

The prostate gland is a male organ that is part of the lower genitourinary system. It lies between the base of the penis and anus.

The prostate is made up largely of muscle and gland tissues. This gland is about the size of a walnut. It usually weighs about one ounce. The urethra drains urine from the bladder, through the prostate, and exits at the penis.

The prostate makes fluid that becomes part of the semen. The semen also contains sperm from the testicles.

Anatomy examples:

  • Cross section of the prostate gland
  • Bladder and lower urinary tract in men
  • Side view of bladder and prostate
  • Genitourinary system

Last Updated: Nov 4, 2008 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Prostate Carcinoma References
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  2. Astorg P. Dietary N-6 and N-3 polyunsaturated fatty acids and prostate cancer risk: a review of epidemiological and experimental evidence. Cancer Causes Control. 2004 May;15(4):367-86. [15141138]
  3. Dagnelie PC, Schuurman AG, Goldbohm RA, Van den Brandt PA. Diet, anthropometric measures and prostate cancer risk: a review of prospective cohort and intervention studies. BJU Int. 2004 May;93(8):1139-50. [15142129]
  4. Johns LE, Houlston RS. A systematic review and meta-analysis of familial prostate cancer risk. BJU Int. 2003 Jun;91(9):789-94. [12780833]
  5. Mahmud S, Franco E, Aprikian A. Prostate cancer and use of nonsteroidal anti-inflammatory drugs: systematic review and meta-analysis. Br J Cancer. 2004 Jan 12;90(1):93-9. [14710213]
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