File:On the anatomy of vertebrates (electronic resource) (1866) (14564329378).jpg

Identifier: b20416039_003 (find matches)
Title: On the anatomy of vertebrates (electronic resource)
Year: 1866 (1860s)
Authors: Owen, Richard, 1804-1892
Subjects: Anatomy, Comparative Vertebrates Fishes Reptiles Mammals Birds
Publisher: London : Longmans, Green
Contributing Library: Wellcome Library
Digitizing Sponsor: Wellcome Library

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iodical enlargement of the testes, MALE ORGANS OF INSECTIVORES. 655 fig. 511, C, is considerable1: the globus major of the epididymislies in the cremasteric pouch, which is inverted when the reducedtestis returns into the abdomen. The vasa deferentia, ib. /, receiveat their termination the secre-tion of the small glands witha granulated exterior, e: the6 vesicular glands, ib. a, a, arelarge, lobulate, and exude ahardish cheese-like secretion.The prostatic glands, b, c, aremasses of slender subconvolutetubes. The Cowperian glands,of the usual compact form, lieone on each side of the rectumand send their long ducts to thelarge 6 foramen caecum at theurethral bulb. The penis hasits levator muscle and ossi-cle : the prepuce is served by apair of glands secreting a whitishmucus. The spermatozoa of the Mu-ridce have the body shapedlike the bent blade of a knife,when viewed in profile, fig.512, a, b ; the vibratile tail is very513) the body is lamelliform, with the surfaces subbiconcave, and
Text Appearing After Image:
Male organs Water-vole, cxxn, long: in the Squirrel (fi; 511 the margin thickened an-teriorly : the (tail is ofmoderate length. It is rela-tively shorter to the body inthe Guinea-pig, fig. 514,^:in this figure a portion of atubule of the testis is mag-nified 300 diameters, show-ing the basilemma a, a, itslining (precipitate) of nucle-ate corpuscles andgranules,b : with the developed nu-clei of detached cells, form-ing the spermatozoa, a. § 372. In Insectivora. — The periodical enlargement1 As in birds ; see vol. ii. p. 243, and xx. vol. iv. p 79.

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