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internal urethral sphincter

internal sphincter muscle of urethra

A urethral sphincter muscle which constricts the internal urethral orifice. It is the junction of the urethra with the urinary bladder. The muscle is made of smooth muscle, so therefore it is under involuntary control. It is kept tonically contracted by the sympathetic nervous system and during micturition, is relaxed via the parasympathetic nervous system. This is the primary muscle for preventing the release of urine[WP].

On this page
유형 Muscle
상위 구조물 urethral sphincter
라틴어 명칭 internal sphincter muscle of urethra
FMA ID 45769

Frequently Asked Questions

What is the internal urethral sphincter?

A urethral sphincter muscle which constricts the internal urethral orifice. It is the junction of the urethra with the urinary bladder. The muscle is made of smooth muscle, so therefore it is under involuntary control. It is kept tonically contracted by the sympathetic nervous system and during mict

What is the Latin name for the internal urethral sphincter?

The Latin name for the internal urethral sphincter is internal sphincter muscle of urethra.

References

  1. Foundational Model of Anatomy — FMA:45769 Reference anatomy ontology (University of Washington)
  2. UBERON — UBERON:0004918 Cross-species anatomy ontology (EMBL-EBI Ontology Lookup Service)

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Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.