Title: The anatomy of the domestic animals
Identifier: anatomyofdomesti00sissuoft (find matches)
Year: 1914 (1910s)
Authors: Sisson, Septimus, 1865-1924
Subjects: Veterinary anatomy
Publisher: Philadelphia Saunders
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: Internet Archive

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578 GENITAL ORGANS OF THE STALLION -JWK- \ THE VESICULiE SEMINALES The vesiculae seminales (Fis. 517) are two ohin»;:iteil and somewhat piriform sacs, which he on each sitlc of the posterior part of the dorsal surface of the blad- der. They are partly enclosed in '~-- . the genital fold, and are related to the rectum dorsally. Their long axes are parallel with the ductus def- erentes ami converge posteriorly. Each consists of a rounded blind end, the fundus; a middle, slightly narrower part, the body; and a pos- terior constricted part, tlie neck or duct. In the stallion they are about • six to eight inches (ca. 15 to 20 cm.) long, and their greatest diameter is about two inches (ca. 5 cm.); in the gekling they are usually much smaller.' The vesiculae are chiefly retro- jDcritoneal, but the fundus extends forward into the genital fold and hence has a serous covering. The excretory duct (Ductus excretorius) (hps under the prostate, and opens in common with or alongside of the ductus deferens in a pouch of the nuicous membrane on the side of the colHcidus seminalis. Structure.—The wall, exclusive of the partial serous coat, consists of a fibrous adventitia, a middle muscular coat, and a mucous lining. The muscular coat is thickest at the fundus, and consists of two planes of longitudinal fibers with a circular layer between them. The mucous membrane is thin, and is arranged in nmuerous folds and projections which form a network; the spaces ' so enclosed present the openings of On left side urethral muscle has been removed over bulho- tuljulo-alvcolar glauds. The cpithe- urethral gland. Cornua of uterus masculinus are indicated in Hum is Columuar. The blood-SUpply genitiil fold. The posterior limit of the peritoneum is shown Jj, Herived frOm the internal PUdlC but not marked. 1, Round ligament of bladder: 2. lateral liga- ' ment of bladder; 3. bulbo-urethral gland. artCry.
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THE PROSTATE The prostate (Prostata) is a lobulatetl gland which lies on the neck of the bladder and the beginning of the urethra, ventral to the rectum. It consists of ' Sometime.^ one or lioth of the ve.sioula> are very large in the gelding. The writer has seen four cases in the dissecting room, three of which were bilateral, the other unilateral. The ve.siciil:i resembled the urhiary bladder in appearance and contained about a quart of thick, amber-colorcti secretion.

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