THE PELVIS. 



287 



Locate on your cadaver: (i) The iliac fossa; (2) the auricular surface of 

 the ilium ; (3) the tuberosity of the ilium ; (4) the tuberosity of the ischium ; (5) 

 the spine of the ischium ; (6) the spine of the pubes ; (7) the ilio-pubal ridge ; 

 (8) the ilio-pectineal line ; (9) the anterior and posterior surfaces of the pubes ; 

 (10) the ischio-pubic ramus ; (11) the thyroid or obturator foramen; (12) the 

 symphysis pubis ; (13) the anterior superior and anterior inferior iliac spines; 



Quadratus lumborum 

 I 



Erector spinse 



TUBEROSITY 



AURICULAR SURFACE 



POST. INF. SPINE OF 

 ILIUM 



Transversalis and the iliac 

 fascia 



GROOVE FOR PUDIC 



VESSELS AND 



NERVE 



Qt. sacro-sciatic 

 ligament 



x^ 



JUNCTION OF PUBES Crus penis and Compressor Subpubie 



AND ISCHIUM Erector penis urethras ligament 



FIG. 196. THE LEFT HIP-BONE. (Internal surface.) 



ANT. SUP. SPINE OF 

 ILIUM 



ANT. INF. SPINE OF ILIUM 



Fsoas minor 



ILIO-PUBAL RIDGE 



GROOVE FOR OBTURATOR 

 NERVE AND VESSELS 



.SYMPHYSIAL SURFACE 

 Levator ani 



(14) the posterior superior and posterior inferior iliac spines ; (15) the greater 

 and lesser sacro-sciatic foramina; (16) the greater and lesser sacro-sciatic liga- 

 ments ; (17) the obturator groove. Locate the above points on the cadaver, 

 and in the progress of your dissection find and dissect the soft structures 

 attached to them or in any way bearing important relations thereto. Study 

 thoroughly the os innominatum. 



Dissection. Quadratus Lumborum. Find the origin on the ilio-lumbar 



