Stallion Repro Tract (new book) Flashcards
Describe the path of the vas deferens (ductus deferens)
The vasa deferentia run from the epididymal tails, through the inguinal canals, and turn backward toward the pelvic cavity, where their diameter increases to form the glandular portions of the vasa deferentia, called ampullae. The ampullae run over the dorsal surface of the urinary bladder, and dive under the isthmus of the prostate, where they come very close together, often holding the uterus masculi- nus between them [1]. The vasa deferentia narrow down again, and continue their course within the ure- thral wall, beyond the prostatic isthmus, to join the excretory ducts of the vesicular glands, and to form the short ejaculatory ducts
Was is name of the summit of the urethral mucosa, at the ejaculatory orifices?
Colliculus seminalis
The colliculus seminalis contains the ejaculatory orifices and what other structure?
A rudimentary remnant of the uterus masculinus and the urogenital sinus, called utriculus masculinus.
What accessory sex glands does the horse have?
Vesicular glands, prostate and bulbourethral gland.
What’s is the US appearance and location of the vesicular glands?
Pyriform sacs (containing anechoic centre) Paired glands at the bladder neck which from a dorsal view extend under the prostate and their duct merges with the duct of the vas deferens forming the short ejaculatory ducts.
What’s is the US appearance and location of the prostate?
Bilobed connected by and isthmus with a Swiss cheese appearance which depends not he arousal of the station. Located at the bladder neck caudal to the vesicular gland and with prostatic ducts at the level of the colliculus seminalis.
What’s is the US appearance and location of the bulboureathral glands?
Similar US appearance to the prostate (Swiss cheese). Paired glands, ovoid at level of pelvic urethra.
What’s is the urethralis muscle?
Consists of dorsal and ventral layers of transverse fibers, form- ing an elliptical sphincter around the urethra covering the casual part of the prostate and the urethra. Its function is to force the release of seminal fluid.
What’s provides the majority of the blood supply to the stallions repro tract?
Prostatic artery.
What’s are the hypoechoic bands in this image of the internal stallion repro tract?
Urethralis muscle
What can be seen in this image of the stallion repro tract?
Vesicular glands, ampullae and a bit of the bladder.
What is the most common pathological condition affecting the internal genitalia of stallions?
And what are the other two conditions named in this chapter?
Ampullary occlusion (most common) often due to a plus of insisted semen.
Cyst of the uterus masculines can also result in occlusion.
Seminal vesiculitis is much less common (usually bacterial).
What is shown in this image of the stallion repro tract?
Large cyst of the uterus masculinus
