Terminology Service for NFDI4Health

internal urethral sphincter

Go to external page http://purl.obolibrary.org/obo/UBERON_0004918


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]. [ http://en.wikipedia.org/wiki/Internal_sphincter_muscle_of_urethra ]

Term info

Label

internal urethral sphincter

Synonyms
  • internal sphincter muscle of urethra
  • internal sphincter of urethra
  • internal urethral sphincter muscle
  • musculus sphincter supracollicularis
  • musculus sphincter urethrae internus
  • preprostatic sphincter
  • sphincter urethrae internus
  • supracollicular sphincter
database cross reference
latin term
sphincter urethrae internus [ FMA : TA FMA : 45769 ]

latin term
musculus sphincter urethrae internus [ FMA : 45769 FMA : TA ]

latin term
musculus sphincter supracollicularis [ FMA : 45769 FMA : TA ]

depicted by

http://upload.wikimedia.org/wikipedia/commons/b/ba/Gray407.png

has related synonym

musculus sphincter urethrae internus

id

UBERON:0004918