266 



MUSCLES OF THE LOWER LIMB. 



The erector ditoridis differs from the erector penis of the male by its 

 smaller size alone. 



The sphincter vaginas is attached behind to the central point of the 

 perinaeum, in common with the sphincter ani and transversus perinsei 

 muscles ; its fibres open out to surround the vaginal orifice and vestibule, 

 closely embracing on the outer side the two bulbs of the vestibule ; again 



Fig. 205. Fig. 205. MUSCLES OP THE PERINEUM IN 



THE FEMALE. j 



a, clitoris ; 6, cms clitoridis ; c, is placed 

 in the vestibule above the orifice of the 

 urethra ; d, vagina ; x , anus ; e, coccyx ; 

 1 , external sphincter ani muscle ; 2, 

 sphincter vaginae; 2', a few of its fibres 

 prolonged to the clitoris ; 3, levator ani ; 

 4, on the left ischial tuberosity, points to 

 the transversus perinei (the inner fibres of 

 this muscle are represented too far forwards 

 in the figure) ; 5, 6, ischio-cavernosus ; 

 7, gracilis ; 8, adductor magnus and semi- 

 tendinosus, &c. ; 9, gluteus maximus. 



approaching each other in front, they 

 become narrow, and are inserted 

 upon the corpora cavernosa of the 

 clitoris, a fasciculus crossing over 

 these and including the vena dorsalis. 

 The two halves of this elliptical mus- 

 cle appear to correspond strictly to those of the bulbo-cavernosus muscle in 

 the male. 



A deep transverse muscle, corresponding to part of the constrictor urethrse 

 of the male, has been described as resting on the pubic surface of the female 

 urethra. 



MUSCLES OF THE LOWER LIMB. 



The muscles which pass between the trunk and the lower limb, viz., the 

 psoas, pyriformis and coccygeus, are so few in number and so intimately 

 connected with others, that it is inexpedient to describe them as a distinct 

 group, as has been done in the case of the more numerous and considerable 

 muscles which attach the upper limb to the trunk. 



MUSCLES OF THE HIP AND THIGH. 



GLUTEAL REGION. The muscles of this region are the three glutei, the 

 pyriformis, the obturator externus, the obturator internus with the gemelli, 

 and the quadratus femoris. 



The gluteus maximus is a very large and coarsely fasciculated muscle, 

 somewhat quadrilateral in shape, which forms the greatest prominence of the 

 gluteal region posteriorly. It arises from the posterior fifth of the iliac 

 crest, and the irregular rough surface of the ilium subjacent to that part ; 

 from the posterior surface of the last piece of the sacrum ; from the great 

 sacro-sciatic ligament and the side of the coccyx ; and between the sacrum 

 and the ilium, from the aponeurosis of the muscles of the back. Thence 

 it passes downwards and outwards ; the fibres of its lower third are inserted 



