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Home › Body Atlas › Organs › Seminal Colliculus
Organ Pelvis & Hip

Seminal Colliculus

colliculus seminalis

The seminal colliculus (verumontanum) is a rounded bump on the back wall of the prostatic urethra. The prostatic utricle opens at its top, with the two ejaculatory ducts opening on either side.

Anatomical Data

Structure & Supply

LocationPosterior wall of the prostatic urethra, on the urethral crest
Parts
Nerve SupplyInferior hypogastric (prostatic) plexus
Blood SupplyInferior vesical artery; Middle rectal artery (prostatic branches)
Venous drainage
Lymphatic drainage
  • Internal iliac nodes
Biomechanics

Function & Actions

Marks where sperm and seminal fluid enter the urethra.

Clinical Relevance

Clinical Notes

It is the key landmark during transurethral prostate surgery: cutting stays above it to protect the external urinary sphincter just below. Posterior urethral valves in baby boys arise just below it.

Pathology

Common Injuries & Conditions

Posterior Urethral Valves

Congenital membranes near the verumontanum obstructing urine flow in boys.

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