. Cunningham's Text-book of anatomy. Anatomy. 490 THE MUSCULAR SYSTEM. The pelvic floor, tense in its anterior part and flexible posteriorly, is formed behind the symphysis pubis by, successively, (1) the fasciae of the urogenital diaphragm and the transversus perinei profundus and sphincter muscle of the membranous urethra between them, the latter enclosing the urethra; and the vagina in the female. (2) The perineal body. (3) The levator ani and external sphincter of the anus on each side of the anal canal; (4) the ano-coccygeal body, between the anal canal and the coccyx, containing the main
. Cunningham's Text-book of anatomy. Anatomy. 490 THE MUSCULAR SYSTEM. The pelvic floor, tense in its anterior part and flexible posteriorly, is formed behind the symphysis pubis by, successively, (1) the fasciae of the urogenital diaphragm and the transversus perinei profundus and sphincter muscle of the membranous urethra between them, the latter enclosing the urethra; and the vagina in the female. (2) The perineal body. (3) The levator ani and external sphincter of the anus on each side of the anal canal; (4) the ano-coccygeal body, between the anal canal and the coccyx, containing the main insertions of the levatores ani and external sphincter. Vesicula seminalis Hypogastric vessels Rectal channel Recto-vesical layer of pelvic fascia Ductus deferens Anal canal. Obturator foramen Suspensory ligament of prostate Lateral pubo-prostatic ligament Tendinous arch of pelvic fascia Prostate Median pubo-prostatic ligament Cavum Retzii Urethra Fig. 434.—Relations of the Pelvic Fascia to the Rectum and Phostate. The levator ani muscle completes the concave floor of the pelvic cavity, sweeping downwards and backwards from its lateral wall, so as to form a muscular diaphragm, with an intra-pelvic and a perineal surface. Its superior concave pelvic surface occupies the lateral part of the pelvic floor. Its inferior convex surface forms the oblique medial wall of the ischio-rectal fossa, the lateral wall of which is formed by .the obturator fascia covering the pelvic surface of the obturator internus. In this wall is a fascial sheath containing the pudendal vessels and nerve. The levator ani is covered on both surfaces by pelvic fascia. The anal fascia clothing its perineal surface is thin and unimportant. The fascia covering its intra-pelvic surface is thick and strong. At the origin. 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 r
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
