Pre-prostatic urethra
Encyclopedia
The pre-prostatic urethra is one of the four parts of the male urethra
Urethra
In anatomy, the urethra is a tube that connects the urinary bladder to the genitals for the removal of fluids out of the body. In males, the urethra travels through the penis, and carries semen as well as urine...

. The pre-prostatic urethra is also known as the intramural urethra, as it is the portion of the urethra
Urethra
In anatomy, the urethra is a tube that connects the urinary bladder to the genitals for the removal of fluids out of the body. In males, the urethra travels through the penis, and carries semen as well as urine...

 which passes almost vertically through the wall of the urinary bladder
Bladder
Bladder usually refers to an anatomical hollow organBladder may also refer to:-Biology:* Urinary bladder in humans** Urinary bladder ** Bladder control; see Urinary incontinence** Artificial urinary bladder, in humans...

, before it enters the prostate
Prostate
The prostate is a compound tubuloalveolar exocrine gland of the male reproductive system in most mammals....

gland.

Both the length and diameter of the pre-prostatic urethra vary depending on whether the bladder is filling or emptying. The length varies between 0.5 cm and 1.5 cm.
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