Morris's Human Anatomy; A Complete Systematic Treatise by English and American Authors Volume 4

Morris's Human Anatomy; A Complete Systematic Treatise by English and American Authors Volume 4

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ...except near its termination, where it is invested only by the endopelvic (recto-vesical) fascia and an extension of subperitoneal tissue. The entire length of the vas deferens is 40-45 cm. (about 16 in.), of which 3 cm. (l in.) may be allotted to the testicular portion, about 7-5 cm. (3 in.) to the funicular portion, 4-5 cm. (If in.) to the inguinal portion, and the rest to the pelvic portion. It is cylindrical and of uniform diameter--2-3 mm. (TV in.)--in its funicular, inguinal, and pelvic stages down to the retrovesical portion, and its walls are of great thickness, about 1 mm., while its calibre is extremely small. It is here composed of an outer adventitia containing vessels and smooth muscular fibres, a threefold muscular coat with external and internal longitudinal and middle circular layers, and a mucous membrane lined with cylindrical epithelium. The retrovesical portion differs from the rest in that it gradually increases in size until it reaches twice its original diameter, its wall at the same time becoming thinner and sacculated. This enlarged portion is the ampulla of the vas deferens, and it approximates in appearance the seminal vesicles (fig. 867). THE SEMINAL VESICLES The vesiculae seminales (figs. 866 and 867) are two diverticular reservoirs situated between the bladder and rectum, external to the ampullae of the vasadeferentia. Each vesicle is of somewhat triangular form, its broad upper extremity lying beneath the peritoneum, its apex joining the vas deferens at the base of the prostate. It averages about 6 cm. (2 in.) in length and 1-2 cm. ( in.) in diameter at its base. It is lobulated on the surface, and on dissection is found to consist of a central tube 8 to 12 cm. (3 to 5 in.) in length, with more

Product details

  • Paperback | 114 pages
  • 189 x 246 x 6mm | 218g
  • United States
  • English
  • black & white illustrations
  • 1236901223
  • 9781236901224