Seminal colliculus
Encyclopedia
The seminal colliculus or verumontanum, of the prostatic urethra is a landmark near the entrance of the seminal vesicle
s. Verumontanum is translated from Latin
to mean 'mountain ridge', a reference to the distinctive median elevation of urothelium
that characterizes the landmark on magnified views. Embryo
logically, it is derived from the uterovaginal primordium
. The landmark is important in classification of several urethra
l developmental disorders. The margins of seminal colliculus are the following:
tumors have been reported at the verumontanum. The structure tends to migrate caudally, or downward, in hypospadia disorders and is then seen in the bulbous, or penile portion of the urethra.
Seminal vesicle
The seminal vesicles or vesicular glands are a pair of simple tubular glands posteroinferior to the urinary bladder of male mammals...
s. Verumontanum is translated from Latin
Latin
Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...
to mean 'mountain ridge', a reference to the distinctive median elevation of urothelium
Urothelium
The urothelium is a form of transitional epithelial tissue layer that lines much of the urinary tract, including the renal pelvis, the ureters, the bladder, and parts of the urethra.-Structure and function:...
that characterizes the landmark on magnified views. Embryo
Embryo
An embryo is a multicellular diploid eukaryote in its earliest stage of development, from the time of first cell division until birth, hatching, or germination...
logically, it is derived from the uterovaginal primordium
Primordium
A primordium , in embryology, is defined as an organ or tissue in its earliest recognizable stage of development. Cells of the primordium are called primordial cells...
. The landmark is important in classification of several 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...
l developmental disorders. The margins of seminal colliculus are the following:
- the orifices of the prostatic utricleProstatic utricleThe prostatic utricle is a small indentation located in the prostatic urethra, at the apex of the urethral crest, on the seminal colliculus , laterally flanked by openings of the ejaculatory ducts...
- the slit-like openings of the ejaculatory ductEjaculatory duct-Anatomy:The ejaculatory ducts are paired structures in male anatomy. Each ejaculatory duct is formed by the union of the vas deferens with the duct of the seminal vesicle. They pass through the prostate, and open into the urethra at the Colliculus seminalis...
s. - the openings of the prostatic ductsProstatic ductsThe prostatic ducts open into the floor of the prostatic portion of the urethra, and are lined by two layers of epithelium, the inner layer consisting of columnar and the outer of small cubical cells....
Pathology
The verumontanum is an important anatomic landmark for pathology in a congenital anomaly known as posterior urethral valves, in which there is a developmental obstruction of the urethra in newborn male infants. Urethral carcinoidCarcinoid
Carcinoid is a slow-growing type of neuroendocrine tumor, originating in the cells of the neuroendocrine system.In 2000, the World Health Organization redefined "carcinoid", but this new definition has not been accepted by all practitioners. This has led to some complexity in distinguishing...
tumors have been reported at the verumontanum. The structure tends to migrate caudally, or downward, in hypospadia disorders and is then seen in the bulbous, or penile portion of the urethra.