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 ]

This is just here as a test because I lose it

Term information

Subsets

uberon_slim, pheno_slim

latin term
trigonum vesicae [ FMA:15910 FMA:TA ]

latin term
musculus trigoni vesicae profundus [ FMA:15910 FMA:TA ]

definition

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

depicted by

Illu:bladder.jpg

development notes

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

function notes

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.

has exact synonym

urinary bladder trigone

deep trigone

trigonum vesicae

bladder trigone

trigone of bladder

musculus trigoni vesicae profundus

vesical trigone

Lieutaud's trigone

has related synonym

dorsal bladder neck

trigonum vesicae urinariae

id

UBERON:0001257