Trigone of urinary bladder

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Trigone of urinary bladder
Urinary bladder
The interior of bladder.
Latin	trigonum vesicae urinariae
Gray's	subject #255 1231
Dorlands/Elsevier	t_19/12823635

The trigone is a smooth triangular region of the internal urinary bladder formed by the two ureteral orifices and the internal urethral orifice.

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.

Contents 1 Pathology 2 Additional images 3 See also 4 External links

[edit] Pathology

Clinically important because infections (trigonitis) tend to persist in this region.

[edit] Additional images

[edit] See also

• Trigonitis

[edit] External links

• trigone+of+bladder at eMedicine Dictionary
• SUNY Labs 44:04-0203 - "The Male Pelvis: The Urinary Bladder"

v • d • e Anatomy: urinary system Abdomen Kidneys • Ureters • Orifice of ureter Pelvis Urinary bladder (Uvula, Trigone, Detrusor, Apex, Neck) Urethral sphincters (External sphincter muscle of male urethra, External sphincter muscle of female urethra, Internal sphincter muscle of urethra) Urethra Development Development of the urinary and reproductive organs