Practical human anatomy [electronic resource] : a working-guide for students of medicine and a ready-reference for surgeons and physicians . aces of the ossa pubis are suspended thescrotum and the penis. Terms of Relation—The general terms (page 2) ; and thespecial terms exterior and interior—relatively to the skin sur-face and the pelvic cavity, respectively—will be used. Perineum and its Boundaries, Plate 5.—The perineum in-cludes all the soft parts, which close the inferior outlet of thepelvis or the space bounded by the bones of the pubic archand the coccyx, and the following ligaments: th
Practical human anatomy [electronic resource] : a working-guide for students of medicine and a ready-reference for surgeons and physicians . aces of the ossa pubis are suspended thescrotum and the penis. Terms of Relation—The general terms (page 2) ; and thespecial terms exterior and interior—relatively to the skin sur-face and the pelvic cavity, respectively—will be used. Perineum and its Boundaries, Plate 5.—The perineum in-cludes all the soft parts, which close the inferior outlet of thepelvis or the space bounded by the bones of the pubic archand the coccyx, and the following ligaments: the inferiorpubic, anteriorly, and the right and left great sacro-sciatic,posteriorly and laterally. 14 TEUNK. Regions of the Perineum.—The perineum is divided bya transverse line, the bis-ischiatic, into a posterior and ananterior region ; in the male they are called rectal and ure-thral; in the female rectal and urethrovaginal. The rectalregion is bounded by the bis-ischiatic line, anteriorly ; the tu-berosities of the ischia, the great sacro-sciatic ligaments and the coccyx, laterally and posteriorly. The urethral (male) or. Figure 1. urethrovaginal (female) region has the bis-ischiatic line, pos-teriorly ; the rami of the pubic arch—the ascending rami ofthe ischia and the descending rami and bodies of the ossa pu-bis—and the inferior pubic ligament, laterally and anteriorly. Bones and Bone Areas.—The bones are: the coccyx andthe pubic arch—parts of the os pubis and ischium of the rightand the left os innominatum. To the internal surface and free MALE PERINEUM. If) borders of a ramus of the pubic arch will be found three linesof fascial attachment, which determine three planes of muscleattachments. The lines are: to the exterior surface and freeborder, the perineal fascia ; to the interior free border and sur-face, the levator fascia (posterior layer of triangular ligament);to about the middle of the intervening surface between theborders, the triangular liga
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