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muscular layer of intermediate part of (male) urethra


Definition: relatively thin inner coat of smooth (involuntary) muscle bundles, mostly longitudinally arranged and separated from the epithelium by a thin vascular stroma of fibroelastic connective tissue, which are continuous superiorly with those of the prostatic urethra and peripherally with an outer, much more prominent layer of circularly oriented skeletal (voluntary) muscle fibers that form the main, tubelike part of the external urethral sphincter.

Synonym(s): tunica muscularis partis intermediae urethrae masculinaeTA

See Also: external urethral sphincter of male

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.