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sphincter muscle of urinary bladder in Medicine

sphincter muscle of urinary bladder

n.
  1. A vesical sphincter made up of a thickening of the middle muscular layer of the bladder around the urethral opening.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.