. The comparative anatomy of the domesticated animals. Veterinary anatomy. S- 2. The Vesiculce Seminales and Ejaculatory Ducts. â¢(Fig. 326.) The vesiculcB seminales are two oval pouches whose volume varies witli Fig. 402. their contents, and which are placed in the pelvic cavity, above the bladder and the vas deferens. Each vesicula has a middle portion and tico extremities. The middle portion is enveloped by a loose abundant cellular tissue, and is in relation with the rectum above, and below with the bladder and vas deferens. The anterior is the largest, and forms a rounded cul-d
. The comparative anatomy of the domesticated animals. Veterinary anatomy. S- 2. The Vesiculce Seminales and Ejaculatory Ducts. â¢(Fig. 326.) The vesiculcB seminales are two oval pouches whose volume varies witli Fig. 402. their contents, and which are placed in the pelvic cavity, above the bladder and the vas deferens. Each vesicula has a middle portion and tico extremities. The middle portion is enveloped by a loose abundant cellular tissue, and is in relation with the rectum above, and below with the bladder and vas deferens. The anterior is the largest, and forms a rounded cul-de-sac, covered in almost the same manner as the bladder by the peritoneum, which at this point fur- nishes a very small triangular frsenum (the recto-vcsical fold) tliat unites the two vesi- culfe. The posterior extremity tapers to a narrow neck, which passes beneath the pros- tale gland, and joins at a very acute angle the terminal extremity of the vas deferens, to constitute the ejaculatory duct. The w'alls of this pouch are composed of three membranes : an internal mucous, a middle musctdar, and an external fibrous. The mucous layer is continuous with that of the ejaculatory ducts, and is very thin, delicate, and follicular. It shows numerous folds, which disaj^pear with distention of the duct. The middle layer evidently belongs to the class of muscular membranes; its identity with that of the bladder is complete. 1, Left vas deferens; 1', Its pelvic At the bottom of the cul-de-sac it gives off dilatation; 2 2 The same on the ggveral fasciculi, which radiate on the ex- ricrht side; d, 4, VesiculEe seminales; , â , p j. , i â¢â /t i t 5, The third vesicula; 6, Serous vernal surface of the peritonemn. (In addi- layer uniting the vasa deferentia; tioD to these, the vesiculte and Vasa defe- 7, That comprised between the two rentia have a muscular covering whose fibres yesiculae; 8, Prostate gland; 9, q^q arranged in a longitudinal and trans- I'dadder seen through the serou
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Keywords: ., bookauthorchauveauaauguste18271, bookcentury1800, bookdecade1870
