. The physiology of reproduction. Reproduction. 230 THE PHYSIOLOGY OF REPRODUCTION The coats of the ejaculatory ducts are relatively thin. The lining epithelium is similar to that of the vas deferens. The urethra, which serves as the common channel for both urine and seminal fluid, is Uned by a columnar epithehum resting on a vascular corium. The latter is surrounded by submucous tissue containing two layers of muscular fibres, the inner being arranged longitudinally, and the outer circularly. The. Fig. 55^—Transveise section through commencement of vas deferens. (After Klein, from Schtifer.)
. The physiology of reproduction. Reproduction. 230 THE PHYSIOLOGY OF REPRODUCTION The coats of the ejaculatory ducts are relatively thin. The lining epithelium is similar to that of the vas deferens. The urethra, which serves as the common channel for both urine and seminal fluid, is Uned by a columnar epithehum resting on a vascular corium. The latter is surrounded by submucous tissue containing two layers of muscular fibres, the inner being arranged longitudinally, and the outer circularly. The. Fig. 55^—Transveise section through commencement of vas deferens. (After Klein, from Schtifer.) a, epithelium ; 6, mucous membrane; f, d, c, inner, middle, and outer layers of muscular coat; /, internal cremaster muscle; g, blood-vessel. urethra in man is usually described as consisting of three divisions, the prostatic, the membranous, and the spongy portions. Of these the membranous portion comprises that part of the urethra between the apex of the prostate and the bulb of -the corpus spongiosum, to be described below. Opening medially into the prostatic portion of the urethra, between the two ejaculatory ducts, is the aperture of the uterus mascuUnus, or organ of Weber, which is the homologue of the vagina and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marshall, F. H. A. (Francis Hugh Adam), 1878-1949; Cramer, William, 1878-1945; Lochhead, James. London, New York, Longmans, Green
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectreproduction, bookyea
