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pertaining to or containing or consisting of semen; "seminal fluid"

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独創的な,将来性のある / (比較変化なし)精液の

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/05/10 21:32:03」(JST)

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The seminal colliculus (Latin colliculus seminalis), or verumontanum, of the prostatic urethra is a landmark near the entrance of the seminal vesicles. 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. Embryologically, it is derived from the uterovaginal primordium. The landmark is important in classification of several urethral developmental disorders. The margins of seminal colliculus are the following:

the orifices of the prostatic utricle
the slit-like openings of the ejaculatory ducts.
the openings of the prostatic ducts

Dissection of prostate showing the prostatic urethra with the seminal colliculus on the posterior wall.

Posterior urethral valves

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.^[1] Urethral carcinoid tumors have been reported at the verumontanum.^[2] The structure tends to migrate caudally, or downward, in hypospadia disorders and is then seen in the bulbous, or penile portion of the urethra.^[3]

Prostatic utricle

The prostatic utricle, a remnant of the paramesonephric duct, arises from the urethra at the level of the verumontanum and projects posteriorly. This blind ending structure can be associated with hypospadias. This is distinct from a Cowper duct syringocele, which arises at the bulbous urethra.

References

^ "Posterior Urethral Valve. Emedicine, Radiology.". eMedicine. July 18, 2010. Retrieved July 18, 2010.
^ Maxwell Smith , M Scott Lucia , Priya N Werahera and Francisco G La Rosa Carcinoid tumor of the verumontanum (colliculus seminalis) of the prostatic urethra with a coexisting prostatic adenocarcinoma: a case report Journal of Medical Case Reports 2010, 4:16
^ F Ikoma, H Shima. 1991. Caudal migration of the verumontanum. Journal of Pediatric Surgery. 26: 7, 858-861.

External links

Anatomy photo:44:05-0202 at the SUNY Downstate Medical Center — "The Male Pelvis: The Prostate Gland"
pelvis at The Anatomy Lesson by Wesley Norman (Georgetown University) (malebladder)
figures/chapter_34/34-3.HTM: Basic Human Anatomy at Dartmouth Medical School

UpToDate Contents

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English Journal

Transrectal ultrasonographic characterization of the accessory sex glands, pelvic urethra, and ureters in normal geldings.

Schnobrich MR1, Turner RO2, Belcher CN3, Slack J4.
Theriogenology.Theriogenology.2016 Jan 15;85(2):186-92. doi: 10.1016/j.theriogenology.2015.09.008. Epub 2015 Sep 11.
Transrectal ultrasound of the internal urogenital tract may be used to aid in the diagnosis of reproductive tract and urinary tract pathology in both stallions and geldings. Abnormalities of the accessory sex glands of geldings are uncommon, although prostatic masses have recently been described in
PMID 26483314

Three-Dimensional Study of the Terminal Portion in Sprague-Dawley Rat Ejaculatory Ducts.

Motohashi M1, Inomata T1, Takahashi H2, Ichihara N1, Kansaku N1, Ikegami M2, Asari M1, Mutou T3, Wakui S1.
Anatomia, histologia, embryologia.Anat Histol Embryol.2015 Aug 13. doi: 10.1111/ahe.12196. [Epub ahead of print]
In mammals, a pair of ejaculatory ducts exists in the urethra at the seminal colliculus. The detailed anatomical structures of the distal end of the ejaculatory ducts of Sprague-Dawley rats were investigated by the computer-assisted three-dimensional reconstruction analysis using light-microscopic s
PMID 26268523

Denonvilliers' fascia revisited.

Kim JH1, Kinugasa Y, Hwang SE, Murakami G, Rodríguez-Vázquez JF, Cho BH.
Surgical and radiologic anatomy : SRA.Surg Radiol Anat.2015 Mar;37(2):187-97. doi: 10.1007/s00276-014-1336-0. Epub 2014 Jul 10.
Although several studies have reported that the peritoneum does not contribute to the formation of a fascia between the urogenital organs and rectum, Denonvilliers' fascia (DF), a fascia between the mesorectum and prostate (or vagina) in adults, is believed to be a remnant of the peritoneum. Remnant
PMID 25008480

Japanese Journal

男子両側尿管異所開口の1例

長浜克志,山田拓己,永松秀樹,増田均,根岸壮治
泌尿器科紀要 39(1), 57-60, 1993-01
… Cystourethroscopy revealed no ureteral orifices in the bladder but bilateral ureteral openings adjacent to the seminal colliculus. …
NAID 120002158405

尿道撮影および内視鏡による精丘の形態的研究

和田一郎
日本泌尿器科學會雜誌 62(5), 368-388, 1971
… A morphological study of the colliculus seminalis has been made by means of retrograde urethrography in 654 cases, including 107 normal cases, 160 cases of benign prostatic hypertrophy, 22 cases of prostatic cancer, 47 cases of prostatism, 107 cases of seminal vesiculitis and prostatitis, 67 cases of neurogenic bladder, 45 cases of urethral stricture, 36 cases of male sterility, 17 cases of nervous urgency and 46 cases of enuresis. …
NAID 110003077773

新造影剤Umbradil及びUmbradil Viscous Uの使用経験

後藤薫 [他],新谷浩,仁平寛巳,酒徳治三郎,日野豪,片村永樹
泌尿器科紀要 3(10), ????, 1957-10
… In al l cases, the posterior urethra was conspicuously distended , the region of seminal colliculus and the neck of bladder being clearly represented . …
NAID 120002116682

「精丘」

Seminal colliculus
	Seminal vesicle and ampullae of ductus deferentes, seen from the front.
	The male urethra laid open on its anterior (upper) surface.
Details
Identifiers
Latin	Colliculus seminalis,; verumontanum
Dorlands; /Elsevier	12265795
TA	A09.4.02.008
FMA	74363
	Anatomical terminology [edit on Wikidata]