- Urethral sphincter
- The muscle that controls the release of urine from the bladder.
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urethral sphincter n SPHINCTER URETHRAE
Medical dictionary. 2011.
Urethral sphincter
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Urethral sphincter — The term urethral sphincter refers to one of two muscles used to control the exit of urine in the urinary bladder through the urethra. The two muscles are the external urethral sphincter and the internal urethral sphincter. When either of these… … Wikipedia
urethral sphincter — noun a striated sphincter muscle that constricts the urethra • Syn: ↑musculus sphincter urethrae • Hypernyms: ↑sphincter, ↑anatomical sphincter, ↑sphincter muscle • Part Holonyms: ↑urethra … Useful english dictionary
urethral sphincter external — see musculus sphincter urethrae externus urethrae femininae and musculus sphincter urethrae externus urethrae masculinae … Medical dictionary
urethral sphincter internal — musculus sphincter urethrae internus … Medical dictionary
urethral sphincter of female urethra external — musculus sphincter urethrae externus urethrae femininae … Medical dictionary
urethral sphincter of male urethra external — musculus sphincter urethrae externus urethrae masculinae … Medical dictionary
urethral sphincter — noun The collective name for the muscles used to control the flow of urine from the urinary bladder. These muscles surround the urethra, so that when they contract, the urethra is closed … Wiktionary
sphincter urethrae — sphincter ure·thrae yu̇ rē thrē n a muscle composed of fibers that arise from the inferior ramus of the ischium and that interdigitate with those from the opposite side of the body to form in the male a narrow ring of muscle around the urethra… … Medical dictionary
Sphincter — A sphincter is an anatomical structure, or a circular muscle, that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning. Sphincters are found in many animals; there … Wikipedia
sphincter muscle — noun a ring of muscle that contracts to close an opening • Syn: ↑sphincter, ↑anatomical sphincter • Hypernyms: ↑muscle, ↑musculus • Hyponyms: ↑physiological sphincter, ↑ … Useful english dictionary
