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A MANUAL OF ANATOMY. 



especially posteriorly and below, is the obturator interims 

 (see Fig. 114); and covering over the front of the sacrum 

 is the pyriformis, which disappears through the greater 

 sacrosciatic foramen. These muscles are covered by the 

 obturator and pyriformis fascia respectively. 



The Obturator Fascia. Fig. 113. Diags. 26, 27. 



It covers the obturator internus and is attached to the 

 inner surface of the pelvis around the origin of the muscle ; 



Diag. 26. THE ATTACHMENTS OF THE PELVIC FASCIA. (Modified from Morris, 

 I. S. H.} i, Levator ani muscle. 2, Perineal fascia. 3, Anterior layer of triangular 

 ligament. 4, Posterior layer of triangular ligament. 5, Compressor urethrae muscle. 

 (Deep transversus perineae.) 6, Erector penis (Ischiocavernosus). 7, The "white 

 line." 8, Origin of the obturator internus. 9, Iliopectineal line. 10, Dotted line 

 shows attachment of the obturator fascia. 



above, to the iliopectineal line ; in front, to the inner surface 

 of the pubes a little external to the symphysis, to the inner 

 lip of the rami of the pubes and ischium ; below, to the inner 



