Title: Anatomy, descriptive and applied
Identifier: anatomydescript00gray (find matches)
Year: 1913 (1910s)
Authors: Gray, Henry, 1825-1861; Spitzka, Edward Anthony, 1876-1922
Subjects: Anatomy
Publisher: Philadelphia, New York, Lea & Febiger
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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1394 THE UBINOGENITAL ORGANS attachment of the base to the under surface of the bladder. The substance of the prostate is of a pale, reddish-gray color, of great densitj', and not easily torn. It consists of glandular sub- stance and muscle tissue. The muscle tissue, according to KoUiker, constitutes the proper stroma of the prostate, the connective tissue being very scanty, and simply forming thin trabeculse between the muscle fibres, in which the vessels and nerves of the gland ramify. The muscle tissue is arranged as follows: Immediately beneath the fibrous capsule is a dense layer, which forms an investing sheath for the gland; secondly, around the urethra, as it lies in the prostate, is another dense layer of cir- cular fibres, continuous above with the internal layer of the muscle coat of the bladder, and heloic blending with the fibres surrounding the membrcinous portion of the urethra. Between these LEFT COMMON
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Fig. 116S.—Sagittal section of the lower part of a male trunk, the right segment. (Testut.) two layers strong bands of muscle tissue, which decussate freely, form meshes in which the glandular structure of the organ is embedded. In that part of the gland which is situated in front of the urethra the muscle tissue is especially dense, and there is here little or no gland tissue; while in that part which is behind the urethra the muscle tissue presents a wide-meshed structure, which is densest at the base of the gland—that is, near the bladder—and becomes looser and more sponge-like toward the ape.x of the organ. The glandular substance is composed of lobules containing numerous branched tubular glands opening into elongated canals, which join to form from twelve to twenty small excretory ducts. The glands are held together by areolar tissue, supported by prolongations from the fibrous capsule and muscle stroma, and enclosed in a delicate capillary plexus. The epithelium which lines the canals and the terminal tubules is of the columnar variety. The prostatic ducts

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