342 



THE MUSCLES AND FASCIAE OF THE TRUNK. 



Fig. 300. SUPERFICIAL MUSCLES OP THE PERINEUM 

 IN THE MALE. (Allen Thomson, after Bour- 

 gery. ) 



a, spine of the pubis ; b, coccyx ; c, placed on 

 the tuberosity of the ischium, points by a line to the 

 great sacro- sciatic ligament ; x , anus ; 1, placed on 

 the corpus spongiosum urethrae in front of the bulbo- 

 cavernosi muscles ; 2, central point of the perineum ; 

 3, ischio-cavernosus ; 4, transversus perinei;*5, le- 

 vator ani ; from 2 to b, external sphincter of the 

 anus ; surrounding x , is the internal sphincter ; 6, 

 coccygeus ; 7, adductor longus ; 8, gracilis ; 9, ad- 

 ductor magnus ; 10, semitendinosus and biceps ; 11, 

 on the left side, the gluteus maxhnus entire ; 11', 

 the same cut on the right side, so as to expose a part 

 of the coccygeus muscle. 



muscles in the central point of the peri- 

 neum. A few deeper fibres pass across 

 without interruption from side to side in 

 front of and behind the anal passage. 



ANT. SUP. IL. S 



PYRIFORMIS 



GREAT SACRO-SCIATIC LIST. 



Fig. 301. MUSCLES OF THE MALE PERINEUM. (After Henle. ) 



The central point of the perineum is the median part of a small transverse tendi- 

 nous septum in which several muscles of the perineum meet. It is placed about 

 an inch in front of the anus, and immediately behind the bulb of the urethra in 



