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 [ MGI:anna MP:0011768 ]
术语信息
- MA:0002492
- NCIT:C12331
- UMLS:C0447586 (ncithesaurus:Bladder_Trigone)
- EMAPA:35174
- FMA:15910
- SCTID:272663002
- Wikipedia:Trigone_of_urinary_bladder
- galen:TrigoneOfUrinaryBladder
uberon_slim, pheno_slim
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
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
urinary bladder trigone
deep trigone
bladder trigone
trigonum vesicae
trigone of bladder
musculus trigoni vesicae profundus
vesical trigone
Lieutaud's trigone