TY - CHAP M1 - Book, Section TI - Chapter 63. Urology A1 - Cantrell, Matthew A. A1 - Kelly, Michael A1 - Vouri, Scott M. A2 - Sutton, S. Scott PY - 2011 T2 - McGraw-Hill's NAPLEX® Review Guide AB - The prostate is a small male organ weighing approximately 15 to 20 g located inferior to the bladder and surrounds the urethra. It produces fluid which contributes to ejaculate volume, but may also prevent infectious processes as this fluid has concentrated quantities of zinc.1 As men age, the prostate—under the influence of androgenic hormones—may begin to grow which increases risk for benign prostatic hyperplasia (BPH). BPH is the most common urological condition in aging men with histological evidence of its presence approaching 90% in octogenarians.2,3 Patients with BPH often have increased smooth muscle tissue in the prostate containing α1-adrenergic receptors resulting in vasoconstriction and subsequent narrowing of the urethral lumen. Patients may also have symptoms of physical obstruction, resulting from an enlarged prostate. SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/03/28 UR - accesspharmacy.mhmedical.com/content.aspx?aid=7256161 ER -