. An American text-book of obstetrics. For practitioners and students. nt. This layer may be regarded as a reflection derived from both theobturator and the recto-vesical fascia, since the septum is formed by the unionof the contribution given off laterally from the obturator fascia with that sup- 34 AMERICAN TEXT-BOOK OF OBSTETRICS. plied mesially by the recto-vesical fascia: this relation is especially evident infrontal sections passing through the ischial tuberosities. The deep perineal interspace lies between the inferior and superior layers ofthe triangular ligament, and it contains withi
. An American text-book of obstetrics. For practitioners and students. nt. This layer may be regarded as a reflection derived from both theobturator and the recto-vesical fascia, since the septum is formed by the unionof the contribution given off laterally from the obturator fascia with that sup- 34 AMERICAN TEXT-BOOK OF OBSTETRICS. plied mesially by the recto-vesical fascia: this relation is especially evident infrontal sections passing through the ischial tuberosities. The deep perineal interspace lies between the inferior and superior layers ofthe triangular ligament, and it contains within its wedge-shaped area the urethraand the surrounding venous plexuses, the internal pudic arteries and accom-panying veins and deeper nerves, and the fibres of the deep transversus peri-nsei muscle, here divided by the genital fissure, and represented by thin groupsof variable muscular tissue surrounding the urethra. On removing the skin and fascia, that part of the pelvic floor lying poste-rior to the perineum proper is divided by a median ridge extending from the. Fig. 16—Dissection of female perineum, showing the deeper structures after removal of the levator andsphincter ani muscles (much modified from Weisse). perineal centre to the tip of the coccyx, that consists of the lower end of therectum surrounded by the deep muscular band of the sphincter ani muscle comprises voluntary fasciculi which extend from the perinealcentre in front, where they blend with the fibres of the superficial transverseperineal and vaginal constrictor, to the tip of the coccyx behind, enclosing theanus in their course. Superficially the anal sphincter is closely related withthe integument, deeply with the levatores ani and the internal sphincter; themuscular tissue of the rectum is closely related to the external sphincter, sincenumerous bands of the former blend with the encircling fasciculi of thesphincter. Externally the anal sphincter comes in contact in its deeper partswith th
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectobstetrics, bookyear1
