urethral sphincter internal
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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
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
Urethral stricture — Classification and external resources Urethra is tube at center. ICD 10 N35 … Wikipedia
sphincter — A muscle that encircles a duct, tube, or orifice in such a way that its contraction constricts the lumen or orifice. SYN: musculus s. [TA], s. muscle [TA]. [G. sphinkter, a band or lace] s. of ampulla s. of hepatopancreatic ampulla. anatomic s.… … Medical dictionary
Internal sphincter muscle of urethra — Infobox Muscle Name = PAGENAME Latin = musculus sphincter urethrae internus GraySubject = GrayPage = Caption = Coronal section of anterior part of pelvis, through the pubic arch. Seen from in front. (Region visible, but muscle not labeled.)… … Wikipedia
Internal urethral orifice — Infobox Anatomy Name = PAGENAME Latin = ostium urethrae internum GraySubject = 255 GrayPage = 1232 Caption = Urinary bladder Caption2 = The interior of bladder. System = MeshName = MeshNumber = DorlandsPre = o 09 DorlandsSuf = 12602099 The… … Wikipedia
urethral pressure profile — (UPP) a record of the resistance of the urethra to fluid flow, measured as variations in urethral pressure (q.v.). A liquid or gas is pumped into the bladder with a catheter in place and the catheter is slowly withdrawn while measurements are… … Medical dictionary
musculus sphincter urethrae internus — [TA] internal sphincter muscle of urethra: a circular layer of smooth muscle fibers surrounding the internal urethral orifice in males, innervated by the vesical nerve, and acting to close the internal orifice of the urethra. No such structure… … Medical dictionary
Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… … Medical dictionary
Urethra — Gray s subject #256 1234 Artery Inferior vesical artery Middle rectal artery Internal pudendal artery Vein … Wikipedia
