Internal urethral orifice

Internal urethral orifice is an anatomical feature found in the urinary system of both males and females. It is the point from which urine stored in the bladder exits into the urethra before being expelled from the body.

Etymology

The term "internal urethral orifice" is derived from the Latin words "intus" meaning "within", "urethra" meaning "pipe", and "orificium" meaning "opening".

Anatomy

The internal urethral orifice is located at the base of the bladder, and is the opening into the urethra. In males, it is located at the apex of the prostate gland, while in females, it is located in the region of the urethral sphincter.

Function

The primary function of the internal urethral orifice is to control the release of urine from the bladder into the urethra. It is normally closed, but opens during the process of urination to allow urine to pass from the bladder into the urethra.

Clinical significance

Abnormalities or damage to the internal urethral orifice can lead to urinary incontinence or difficulty in urination. Conditions such as urethral stricture or bladder neck obstruction can affect the function of the internal urethral orifice.

See also

• Urinary system
• Urethra
• Bladder

Internal urethral orifice Resources
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