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Topic: Ejaculatory ducts


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  Ejaculatory duct - Wikipedia, the free encyclopedia
The anterior walls of the left ampulla, left seminal vesicle, and prostatic urethra have been cut away.
The Ejaculatory ducts are part of the human male anatomy, which cause the reflex action of ejaculation.
During ejaculation, semen passes through the ducts and exits the body via the penis.
en.wikipedia.org /wiki/Ejaculatory_duct   (110 words)

  
 MANUSCRIPT   (Site not responding. Last check: 2007-10-07)
The primary purpose of TRUS is to assess for obstruction and the absence or hypoplasia of the seminal vesicle and ejaculatory ducts.
The ejaculatory duct is formed by the confluence of the seminal vesicle and the terminal ampullary portion of the vas deferens.
One caveat is that TRUS cannot exclude an obstruction of the ejaculatory duct proximal to the region of the prostate and seminal vesicles.
www.bcm.edu /urol/fertility/trus.htm   (3500 words)

  
 Male Infertility Overview: Part II
This includes congenital bilateral absence of the vas deferens, bilateral ejaculatory duct obstruction not corrected by transurethral surgery, obstructive azoospermia secondary to surgical removal of the vasal ampullae and seminal vesicles during cystoprostatectomy or radical prostatectomy, failed vasoepididymostomy where the prognosis for redo surgery is poor.
Ejaculatory dysfunction is a relatively uncommon occurrence in the general population.
Ejaculatory dysfunction in fertility though is almost a universal sequelae of spinal cord injury to men.
www.ivf.com /shaban2.html   (3755 words)

  
 Or-Live Content: Current US techniques for evaluating male infertility
The absence of fructose in ejaculate suggests obstruction of the ejaculatory duct or absence of the seminal vesicles.
The terminal vas deferens, seminal vesicles, ejaculatory ducts, and prostate were examined in a systematic manner in both the axial and sagittal planes, and measurements were recorded in 2 dimensions.
Transrectal ultrasonography in disorders of the seminal vesicles and ejaculatory ducts.
or-live.mediwire.com /main/Content.aspx?ArticleID=154228   (3338 words)

  
 Untitled Document
Their excretory ducts are nearly an inch in length, and pass obliquely forward beneath the mucous membrane, opening by a minute orifice on the floor of the bulbous portion of the urethra.
The spermatic cord is composed of arteries, veins, lymphatics, nerves, the excretory ducts of the testicle, and a thin fibrous cord.
The ejaculatory ducts, one on each side, are formed by the junction of the ducts of the vesiculae seminales with the vasa deferentia.
www.meridianinstitute.com /eamt/files/barber/Bar1CH21.htm   (6964 words)

  
 The Reproductive System - DESIGN, WORKINGS, AILMENTS, TAKING CARE   (Site not responding. Last check: 2007-10-07)
Duct formed by the union of the ductus deferens and the duct of the seminal vesicle.
Ducts that carry milk from the alveolar glands to the surface of the nipple of a breast.
The ejaculatory duct is a short passageway that is formed by the union of a ductus deferens and the duct of a seminal vesicle.
www.faqs.org /health/Body-by-Design-V2/The-Reproductive-System.html   (9620 words)

  
 Ejaculatory Duct Obstruction -BR Gilbert,M.D.,Ph.D.
The thin wall of the ejaculatory duct is composed of three layers (40): (1) the outer fibrous layer disappears as the ejaculatory ducts enter the prostate, (2) an inner layer of muscular fibers consisting of a thin outer circular layer and an inner longitudinal layer and (3) a mucus membrane covered with columnar epithelium.
TUI is used primarily for incising short strictures of the ejaculatory ducts and for the initial opening (prior to TUR) of ejaculatory ducts visualized by a dye vasogram.
The limited resection necessary for correction of the obstructed ejaculatory duct together with the use of intraoperative transrectal ultrasound scanning for localization of the lesion and identification of the depth of the resection, likely limits the occurrence of these injuries.
www.brucegilbertmd.com /publications/chapters/BRGtured.html   (5703 words)

  
 overview of communication   (Site not responding. Last check: 2007-10-07)
the seminal ducts (or vas deferens) serve as excretory ducts for the testes, connecting the epididymides with the ejaculatory ducts.
the ejaculatory ducts pass through the prostate gland and terminate in the urethra.
the spermatic cords enclose the seminal ducts, blood vessels, lymphatics, and nerves.
www.wvdhhr.org /bph/modules/man/man-fac5.htm   (476 words)

  
 XI. Splanchnology. 3c. 4. The Ejaculatory Ducts. Gray, Henry. 1918. Anatomy of the Human Body.   (Site not responding. Last check: 2007-10-07)
Each is formed by the union of the duct from the vesicula seminalis with the ductus deferens, and is about 2 cm.
They commence at the base of the prostate, and run forward and downward between its middle and lateral lobes, and along the sides of the prostatic utricle, to end by separate slit-like orifices close to or just within the margins of the utricle.
They are: an outer fibrous layer, which is almost entirely lost after the entrance of the ducts into the prostate; a layer of muscular fibers consisting of a thin outer circular, and an inner longitudinal, layer; and mucous membrane.
www.bartleby.com /107/261.html   (226 words)

  
 Chapter 34: Male genitalia
34-2) is continuous from the epididymis to the ejaculatory duct.
The two ejaculatory ducts penetrate the prostate and open on the colliculus seminalis into the prostatic urethra.
The portion of the prostate that extends anteriorward from the superior part of the posterior surface and lies between the ejaculatory ducts and the urethra is commonly known as the middle (or median) lobe.
www.dartmouth.edu /~humananatomy/part_6/chapter_34.html   (1911 words)

  
 [No title]
It functions to carry sperm from the epididymis to the ejaculatory duct.
It is formed by the union of the ductus deferens and the duct of the seminal vesicle.
Emission - Is the movement of sperm from the epididymis to the ejaculatory ducts.
www.etsu.edu /cpah/hsci/forsman/Malelecture.htm   (1408 words)

  
 Reproductive System Information
From this junction, the ejaculatory ducts pass through the prostate gland, where they receive more secretions, then join with the single urethra (tube through which sperm and urine pass out of body).
It passes from the urinary bladder and the ends of the ejaculatory ducts through the prostate gland and into the penis.
The hormones stimulate the ducts and glands in the breasts, enlarging the breasts.
www.besthealth.com /besthealth/bodyguide/reftext/html/repr_sys_fin.html   (1986 words)

  
 Male Infertility - Diagnostic Surgery
Another significant purpose of TRUS is the assessment of the absence or hypoplasia of the seminal vesicles and ejaculatory ducts.
Ejaculatory duct cysts, ejaculatory duct calcification, ejaculatory duct dilation, and seminal vesicle dilation visualized on TRUS are all consistent with ejaculatory duct obstruction.
The ejaculatory duct measures approximately 4–8 mm in diameter with a 2 mm lumen, and may be difficult to image in its typically nondilated state.
www.infertility-male.com /patientevaluation/diasur.htm   (5233 words)

  
 An Overview of Prostate Development   (Site not responding. Last check: 2007-10-07)
The ejaculatory ducts enter dorsally and join the urethra within the gland either side of the prostatic utricle.
Near the junction of the ejaculatory tubes and the urethra is a short diverticulum in the urethral crest.
In the male embryo the paramesonephric ducts degenerate, leaving behind the vestiges of the uterovaginal primordium, the prostatic utricle.
www.ana.ed.ac.uk /anatomy/database/prosbase/prosdev.html   (1005 words)

  
 THE STRUCTURE OF THE CLOACAL PROTUBERANCE OF THE VESPER SPARROW (POOECETES GRAMINEUS) AND CERTAIN OTHER PASSERINE BIRDS
The ejaculatory duct becomes distinct from the glomus at its distal end and makes a single forward loop as it travels a distance of about three millimeters to the ventral wall of the cloaca, the entrance to which has been previously described.
The papillae on which these ejaculatory ducts open in the genital chamber of the cloaca are merely free extensions of the duct.
This is possibly caused by the close attachment of the glomera and the ejaculatory ducts to the end of the gut.
elibrary.unm.edu /sora/Auk/v071n01/p0064-p0073.html   (5291 words)

  
 The male urogenital tract
1. The wolffian ducts constitute the epididymis, the seminal vesicles, the ejaculatory ducts and the central part of the prostate.
The glandular orifices are in contact with the ejaculatory ducts and end near the verumontanum.
Spermatozoa and the seminal plasma are ejaculated through the ejaculatory ducts which open to the urethra at the verumontanum.
www.gfmer.ch /Books/Reproductive_health/Male_tract.html   (1752 words)

  
 Ejaculatory Duct Obstruction
The ejaculatory duct is the conduit that carries the semen into the urethra (the tube in the penis).
Symptoms associated with ejaculatory duct obstruction are extremely variable; there may be no symptoms at all or only vague ones.
If obstruction is present, transurethral resection of the ejaculatory ducts (openings of the ducts) should be performed.
www.urologyclinicofhouston.com /faq/faq_ductobstruction.html   (360 words)

  
 Neotropical Entomology - Comparative anatomy of the male reproductive internal organs of 51 species of bees   (Site not responding. Last check: 2007-10-07)
The remaining internal organs of the MRA, except for the ejaculatory duct and the accessory glands, also form a globular unit encapsulated by the scrotal membrane, which may be elongated (Fig.
The ejaculatory duct is thicker, and, in some species, it may even present a complex pattern, such as longitudinal fissures (Figs.
Ultrastructure of the ducts of the reproductive tract of males of Melipona bicolor Lepeletier (Hymenoptera, Apidae, Meliponini).
www.scielo.br /scielo.php?pid=S1519-566X2004000500005&script=sci_arttext&tlng=en   (2420 words)

  
 Gray, Henry. 1918. Anatomy of the Human Body. Page 1247
The upper extremities of the two vesicles diverge from each other, and are in relation with the ductus deferentes and the terminations of the ureters, and are partly covered by peritoneum.
The lower extremities are pointed, and converge toward the base of the prostate, where each joins with the corresponding ductus deferens to form the ejaculatory duct.
When uncoiled, the tube is about the diameter of a quill, and varies in length from 10 to 15 cm.; it ends posteriorly in a cul-de-sac; its anterior extremity becomes constricted into a narrow straight duct, which joins with the corresponding ductus deferens to form the ejaculatory duct.
www.bartleby.com /107/pages/page1247.html   (594 words)

  
 The Male Reproductive System
In the duct of the epididymis the muscle coat is thicker and the lining is thick with tufts of large nonmotile cilia.
The two ejaculatory ducts lie on each side of the midline and are formed by the union of the duct of the seminal vesicle, which contributes secretions to the seminal fluid, with the end of the ductus deferens at the base of the prostate.
Each duct is about two centimetres (about 0.8 inch) long and passes between a lateral and the median lobe of the prostate to reach the floor of the prostatic urethra.
www.becomehealthynow.com /ebookprint.php?id=795   (2427 words)

  
 [No title]
As a result of the traction exerted by the kidneys during their cranial ascent and because of the continued downward growth of the mesonephric ducts, the ureters will eventually open laterally and cranially to the ejaculatory ducts, which are the adult derivatives of the mesonephric ducts in the male.
the epithelium of the prostatic urethra proximal to the orifices of the ejaculatory ducts is derived from mesoderm of the mesonephric ducts
The epithelium of the remainder of the prostatic portion of the urethra (distal to the orifices of the ejaculatory ducts) and the membranous urethra is derived from the endoderm of the middle portion of the urogenital sinus.
www.kumc.edu /research/medicine/pharmacology/CAI/webCAI/anatomy/em15.wbc   (2756 words)

  
 Untitled   (Site not responding. Last check: 2007-10-07)
Ampullary Portion = the dilated portion near the seminal vesicles as it converges onto the ejaculatory duct.
Middle Lobe: The important portion of the prostate between the prostatic urethra and the ejaculatory ducts.
Ejaculatory Ducts: The union of the ductus deferens and seminal vesicles.
www.ucd.ie /vetanat/ga-subject/pelvis/pl9.html   (310 words)

  
 The Scott Department of Urology   (Site not responding. Last check: 2007-10-07)
The ejaculatory duct is a tubular structure that joins the prostatic portion of the urethra and is responsible for transporting sperm and seminal vesicle fluid into the prostatic urethra, the final destination of sperm prior to ejaculation.
Obstructed ejaculatory ducts are usually diagnosed by transrectal ultrasound imaging or by special radiographic tests called vasograms.
Obstructed ducts are treated by a simple transurethral procedure whereby the obstructed part of the duct is removed, leaving normal, unobstructed ductal tissue behind.
www.baylorurology.org /index.cfm?threadId=422   (117 words)

  
 Re-emergence of Vibrio Cholerae O139 in Pakistan: report from a Tertiary Care Hospital   (Site not responding. Last check: 2007-10-07)
The seminal tract develops from the mesonephric duct which is a paired structure draining the mesonephric tubules in to the cloaca.
All of these patients were found to have bilaterally absent ejaculatory ducts and only one patient was found to have bilaterally present seminal vesicles.4 Both of our patients had TRUS but in both patients radiologist was unable to localize the vas deferens but reported the presence of seminal vesicles bilaterally.
This study emphasized that absence of seminal fructose and low volume ejaculate in these patients may be due to agenesis of ejaculatory ducts rather than absence of seminal vesicles.5 However, in these two patients, seminal fluid examination had shown the presence of fructose indicating the presence of functioning seminal vesicles and patent ejaculatory ducts.
jpma.org.pk /JPMA/8Aug03/caseisolated.htm   (785 words)

  
 Ejaculatory Duct Obstruction: definition, symptoms, treatments, cures, and support.   (Site not responding. Last check: 2007-10-07)
Ejaculatory Duct Obstruction (EDO) is a disease of the prostate.
The ejaculatory ducts pass through the prostate from the seminal vesicles to the prostatic urethra.
The ejaculatory ducts may become obstructed from stones, prostatitis, benign prostatic hyperplasia, urological procedures, and other causes.
www.ejaculatoryductobstruction.org   (186 words)

  
 Lab Exercises- Ducts
The main portion of the duct of the epididymus is characterized by high columnar epithelium distinguished by sterocilia which reach into the lumen of the duct.
The stereocilia gradually disappear towards the distal regions of the duct.
The ejaculatory ducts will empty their content of sperm into the prostatic urethra.
cellbio.utmb.edu /microanatomy/Male_reproductive/ducts_lab.htm   (818 words)

  
 Center for Male Reproductive Medicine and Microsurgery
The aspirate is examined microscopically and if sperm are found, transurethral resection (TUR) of the ejaculatory duct is performed without need for prior vasography as the presence of sperm indicates that at least one side is not obstructed more proximally and that the cyst or dilated ejaculatory duct communicates with a nonobstructed vas.
If ejaculatory duct obstruction is confirmed by vasography employing a 50% water-soluble contrast media, the umbilical artery catheters used for vasography stents are left in place so that a dilute methylene blue solution can be injected by the assistant during resection.
The ejaculatory ducts course between the bladder neck and the verumontanum and exit at the level of and along the lateral aspect of the verumontanum.
www.maleinfertility.org /new-obstruction.html   (393 words)

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