prostatic urethra

The widest and most dilatable part of the male urethra canal which runs almost vertically through the prostate from its base to its apex, lying nearer its anterior than its posterior surface; this portion of the urethral canal is spindle-shaped, being wider in the middle than at either extremity, and narrowest below, where it joins the membranous portion; it is lined by transitional epithelium and contains in its posterior wall, or floor, the orifices of the prostatic utricle, ejaculatory ducts, and prostatic ducts, collectively known as the seminal colliculus (aka verumontanum). Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the prostatic urethra is

The widest and most dilatable part of the male urethra canal which runs almost vertically through the prostate from its base to its apex, lying nearer its anterior than its posterior surface; this portion of the urethral canal is spindle-shaped, being wider in the middle than at either extremity, and narrowest below, where it joins the membranous portion; it is lined by transitional epithelium and contains in its posterior wall, or floor, the orifices of the prostatic utricle, ejaculatory ducts, and prostatic ducts, collectively known as the seminal colliculus (aka verumontanum). The atlas records it as a organ at the organ scale in the human body.

Where the prostatic urethra is

It sits within the urinary system. Not positioned individually, and containment is not asserted either. Drawn near structures of the same kind, which is a weak claim about location.

What the prostatic urethra connects to

The atlas records 11 typed relationships for it, across 5 kinds of connection. part of anatomical conduit and male urethra.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the prostatic urethra. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as male prostatic urethra, pars prostatica urethrae, prostatic part of male urethra and prostatic part of urethra. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001335, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: anatomical conduit and male urethra.
• A kind of: organ part.
• contains: lamina propria of prostatic urethra, male urethral crest, mucosa of prostatic urethra, muscular layer of prostatic urethra, prostatic utricle and transitional epithelium of prostatic urethra.
• contributes to morphology of: male urethra.
• located in: prostate gland.

Questions

Where is the prostatic urethra?

It sits within the urinary system. Not positioned individually, and containment is not asserted either. Drawn near structures of the same kind, which is a weak claim about location.

What does the prostatic urethra connect to?

Part of: anatomical conduit and male urethra.

Is the prostatic urethra the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.