Stephen J. Schueler, M.D.

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Benign Prostatic Hyperplasia Anatomy

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

The prostate gland is a male organ that 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: Dec 10, 2010 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Benign Prostatic Hyperplasia References
  1. Barry MJ, O'Leary MP: Advances in benign prostatic hyperplasia. The developmental and clinical utility of symptom scores. Urol Clin North Am 1995 May; 22(2): 299-307. [7539176]
  2. Comhaire F, Mahmoud A. Girman CJ, Jacobsen SJ, Guess HA, et al: Natural history of prostatism: relationship among symptoms, prostate volume and peak urinary flow rate. J Urol 1995 May; 153(5): 1510-5. [7536258]
  3. Milani S, Djavan B. Lower urinary tract symptoms suggestive of benign prostatic hyperplasia: latest update on alpha-adrenoceptor antagonists. BJU Int. 2005 Jun;95 Suppl 4:29-36. [15871733]
  4. Preventing diseases of the prostate in the elderly using hormones and nutriceuticals. Aging Male. 2004 Jun;7(2):155-69. [15672940]
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