internal sphincter of urethra
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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
Urethra — Gray s subject #256 1234 Artery Inferior vesical artery Middle rectal artery Internal pudendal artery Vein … 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
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
sphincter muscle of urethra internal — sphincter muscle of urinary bladder musculus sphincter urethrae internus … Medical dictionary
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
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
Membranous urethra — The male urethra laid open on its anterior (upper) surface. (Membranous part labeled at upper right.) Latin pars intermedia urethrae masculinae, pars membranacea urethrae masculinae Gray s … Wikipedia
renal system — ▪ anatomy Introduction in humans (human body), organ system that includes the kidneys, where urine is produced, and the ureters, bladder, and urethra for the passage, storage, and voiding of urine. In many respects the human excretory, or… … Universalium
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
