Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun anatomy The collective name for the muscles used to control the flow of
urine from the urinarybladder . These muscles surround theurethra , so that when they contract, the urethra is closed.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a striated sphincter muscle that constricts the urethra
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