File:The comparative anatomy of the domesticated animals (1908) (20482165000).jpg

Title: The comparative anatomy of the domesticated animals
Identifier: comparativeanato00chau (find matches)
Year: 1908 (1900s)
Authors: Chauveau, A. (Auguste), 1827-1917; Arloing, S. (Saturnin), 1846-1911; Fleming, George, 1833-1901
Subjects: Horses; Veterinary anatomy
Publisher: New York : Appleton
Contributing Library: Webster Family Library of Veterinary Medicine
Digitizing Sponsor: Tufts University

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Text Appearing Before Image:
TEE GENITAL ORGANS OF THE MALE. 979 developetl, and presents, internally, a longitudinal fibrous cord; it is not much dilated during erection. In this act, the penis is elongated hy tlic straiglitening out of its curvatures, rather tluiu by any real lengthenings; when erection ceases, the organ is retracted into the preputial cavity by the contraction of the suspensory ligaments, which reform its double iulleetiou l>ehiml the scrotum. ^^^ In the Ram, the disposition of the testicles and vasadefCTUna is somewhat similar. The membranous portion of the uiethra has no prostate, but quite posteriorly it lias two sioall C'owper's gland.s, the. upper face of whicli is covered by a red muscular layer that leaves the origin of the bulbous portion and is lost on this surface. The muscles are disposed as in the Bull. But the sf)ongy portion of the urethra is not enveloped by the corpus cavernosum, which is channeled, as in Solipeds, by a furrow that lodges the urethra. The iiead of the penis is remarkable for two lateral folds, disposed like wings at the base of the glans. One of these is only slightly developed, so that the head of the penis looks asymmetrical. The Fig. 527.
Text Appearing After Image:
PENIS AND MUSCLES OF THE PREPUCE OF THE BULL. 1, Protractor muscle of the prepuce; 2, retractor of ditto; 3, testicles in the scrotum ; 4, the -S of the penis; 5, suspeasory ligaments of the penis attached to the second curve; tl, subcutaaeous abdominal vein. nrethra isal^o prolonged by a vermiform appendix from 1 to U inches long. (In the Tlam, the extremity of the urethra bus tiie form of a narrow cylinder curved backwards, its opening being a longitudinal slit. In Ruminants, towards the extremity of the prepuce are small teats; these, in the He-goat, are sometimes glandular, and secrete a fluid analogous to milk.) Pig.—The testicleit of this animal are round, and placed in the perinaeal region. The scrotum is narrow, and but liitle detached: the pouches of which it is composed appearing simply as two hemispherical prominences on the surface of the perinfeum. There is nothing particular to be remarked in the epididymis and vas deferens; (the tail of the first is very voluminous; the latter has no pelvic dilatation ) The resiculai seviinales, with regard to disposition, are intermedinte between those of the Horse and Ox. Their walls are thick and very glamluhir, and their interior is diveiticulated. (They are, proportionately, very large, and, in structure, closely resemble those of Ruminanta;

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