File:The comparative anatomy of the domesticated animals (1886) (20707819682).jpg

Title: The comparative anatomy of the domesticated animals
Identifier: cu31924000012389 (find matches)
Year: 1886 (1880s)
Authors: Chauveau, A. (Auguste), 1827-1917; Arloing, S. (Saturnin), 1846-1911; Fleming, George, 1833-1901. tr
Subjects: Veterinary anatomy
Publisher: New York, D. Appleton and Company
Contributing Library: Cornell University Library
Digitizing Sponsor: MSN

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THE MALE GENITAL VEGANS. 869 cavernosuin. The latter is little developed, and presents, internally, a longitudinal fibrous cord; it is not much dilated during erection. In this act, the penis is elongated by the straightening out of its curvatures, rather than by any real lengthening; when erection ceases, the organ is retracted into the preputial cavity by the contraction of the sus- pensory cords, which reform its double inflection behind the scrotum. In the Bam and Se-goat, the disposition of these parts is somewhat similar. (In the former, the extremity of the urethra has the form of a narrow cylinder curved backwards, its opening being a longitudinal slit. In Euminants, towards the extremity of the sheath are small teats; these, in the He-goat, are sometimes glandular, and secrete a fluid analogous to milk.) Fig. 405.
Text Appearing After Image:
PENIS AND MUSCLES OP THE SHEATH OF THE BULL. 1, Protractor muscle of the sheath ; 2, Retractor of ditto; 3, Testicles in the scrotum; 4, The S of the penis; 5, Suspensory cords of the penis attached to the second curve : 6, Subcutaneous abdominal vein. Pig —The testicles of this animal are round, and placed in the perineal region. The scrotum is narrow, and but little detached: the pouches of which it is composed appearing simply as two hemispheri<-al prominences on the surface of the perineum. 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 vesievlx seminaUs, with regard to disposition, are intermediate between those of the Horse and Ox Their walls are thick and very glandular, and their interior la diverticulated. (They are, proportionately, very large, and, in structure, closely re- semble those of Euminants; indeed, in these animals they rather appear to be organs for the secretion of a milky liquid that is mixed with the semen, than reservoirs for the fecundating matter, as that fluid never contains any spermatozoa.) There are two m-ostaUs: one disposed as in the Ox; the other placed across the neck of the bladder, as in Solipeds. The penis resembles that of Euminants, except in the absence of the muscles of the sheath; it has also a particular preputial sheath, which has been studied 58

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