Medical Definition of Annulus urethralis

1. The complete collar of smooth muscle cells of the neck of the urinary bladder which extend distally to surround the preprostatic sportion of the male urethra. There is not a comparable structure in the neck of the femoral bladder; the internal urethral sphincter may exist to prevent reflux of semen into bladder. Synonym: annulus urethralis, internal urethral sphincter, musculus sphincter vesicae, preprostate urethral sphincter, proximal urethral sphincter, sphincter muscle of urinary bladder. (05 Mar 2000)

Lexicographical Neighbors of Annulus Urethralis

annulus fibrosus cordis
annulus fibrosus disci intervertebralis
annulus fibrosus of intervertebral disc
annulus haemorrhoidalis
annulus iridis
annulus iridis major
annulus iridis minor
annulus lymphaticus cardiae
annulus ovalis
annulus tendineus communis
annulus tympanicus
annuluses
annum
annumeration
annunciable
annunciate
annunciated
annunciates
annunciating
annunciation
annunciations
annunciative
annunciator
annunciators
annunciatory

Other Resources:

Search for Annulus urethralis on Dictionary.com!Search for Annulus urethralis on Thesaurus.com!Search for Annulus urethralis on Google!Search for Annulus urethralis on Wikipedia!

Search