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- Urethral_sphincter abstract "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 muscles contracts, the urethra is sealed shut.The external urethral sphincter originates at the ischiopubic ramus and inserts into the intermeshing muscle fibers from the other side. It is controlled by the deep perineal branch of the pudendal nerve. Activity in the nerve fibers constricts the urethra. The internal sphincter muscle of urethra: located at the bladder's inferior end and the urethra's proximal end at the junction of the urethra with the urinary bladder. The internal sphincter is a continuation of the detrusor muscle and is made of smooth muscle, therefore it is under involuntary or autonomic control. This is the primary muscle for prohibiting the release of urine. The external sphincter muscle of urethra (sphincter urethrae): located at the bladder's distal inferior end in females and inferior to the prostate (at the level of the membranous urethra) in males is a secondary sphincter to control the flow of urine through the urethra. Unlike the internal sphincter muscle, the external sphincter is made of skeletal muscle, therefore it is under voluntary control of the somatic nervous system.".
- Urethral_sphincter thumbnail Prostatic_urethra.svg?width=300.
- Urethral_sphincter wikiPageID "14098910".
- Urethral_sphincter wikiPageRevisionID "565165223".
- Urethral_sphincter hasPhotoCollection Urethral_sphincter.
- Urethral_sphincter subject Category:Perineum.
- Urethral_sphincter subject Category:Urethra.
- Urethral_sphincter subject Category:Urinary_system.
- Urethral_sphincter comment "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 muscles contracts, the urethra is sealed shut.The external urethral sphincter originates at the ischiopubic ramus and inserts into the intermeshing muscle fibers from the other side. It is controlled by the deep perineal branch of the pudendal nerve.".
- Urethral_sphincter label "Musculus urethralis".
- Urethral_sphincter label "Músculo esfíncter externo da uretra".
- Urethral_sphincter label "Músculo esfínter externo de la uretra".
- Urethral_sphincter label "Sfintere uretrale".
- Urethral_sphincter label "Urethral sphincter".
- Urethral_sphincter label "Zwieracze układu moczowego".
- Urethral_sphincter sameAs Musculus_urethralis.
- Urethral_sphincter sameAs Músculo_esfínter_externo_de_la_uretra.
- Urethral_sphincter sameAs Sfintere_uretrale.
- Urethral_sphincter sameAs Zwieracze_układu_moczowego.
- Urethral_sphincter sameAs Músculo_esfíncter_externo_da_uretra.
- Urethral_sphincter sameAs m.03ctlg1.
- Urethral_sphincter sameAs Q1424728.
- Urethral_sphincter sameAs Q1424728.
- Urethral_sphincter wasDerivedFrom Urethral_sphincter?oldid=565165223.
- Urethral_sphincter depiction Prostatic_urethra.svg.
- Urethral_sphincter isPrimaryTopicOf Urethral_sphincter.