trigone of urinary bladder
http://purl.obolibrary.org/obo/UBERON_0001257
The smooth triangular region of the wall of the urinary bladder formed by the two ureteral orifices and the internal urethral orifice; it is an area in which the muscle fibers are closely adherent to the mucosa. [ MP:0011768 http://www.informatics.jax.org/accession/anna ]
Synonyms: urinary bladder trigone, deep trigone, trigone of bladder, trigonum vesicae, bladder trigone, musculus trigoni vesicae profundus, vesical trigone, Lieutaud's trigone
Term info
- Wikipedia:Trigone_of_urinary_bladder
- MA:0002492
- galen:TrigoneOfUrinaryBladder
- FMA:15910
- UMLS:C0447586 (ncithesaurus:Bladder_Trigone)
- SCTID:272663002
- NCIT:C12331
- EMAPA:35174
uberon_slim, pheno_slim, human_reference_atlas
The area is very sensitive to expansion and once stretched to a certain degree, the urinary bladder signals the brain of its need to empty. The signals become stronger as the bladder continues to fill.
Embryologically, the trigone of the bladder is derived from the caudal end of mesonephric ducts, which is of mesodermal origin (the rest of the bladder is endodermal). In the female the mesonephric ducts regresses, causing the trigone to be less prominent, but still present
https://upload.wikimedia.org/wikipedia/commons/5/57/Illu_bladder.jpg
dorsal bladder neck, trigonum vesicae urinariae
uberon
UBERON:0001257
trigone of urinary bladder, Trigone of urinary bladder
http://purl.obolibrary.org/obo/NCBITaxon_9606