32 



ANATOMY OF THE RABBIT 



innominate bone are separate in young individuals, but fuse 

 together solidly in old adults. The three major parts of this 

 bone are the ilium, ischium, and pubis. The cotyloid or 



LSN 



LIT 



IT— 



-ISCH 



Fig. 14. — Right innominate bone, slightly twisted to show structures. AC, 

 acetabulum; C, crest of ilium; CAP, caudoventral margin of auricular surface; 

 IAS, inferior anterior spine; IE, iliopectineal eminence; ILI, ilium, IPS, inferior 

 posterior spine (caudodorsal margin of auricular surface) ; IS, ischial spine (on 

 dorsomedial surface); ISCH, ischium; ISY, ischial symphysis, which is con- 

 tinuous with PS; IT, ischial tuberosity; LIT, lateral ischial tuberosity; LSN, 

 lesser sciatic notch; OB, obturator foramen; P, pubis; PS, pubic symphysis; 

 SAS, anterior superior spine. 



acetabular bone is insignificant in point of size. The Hnes 

 of union (sutures) of the parts of the innominate bone all 

 unite in, or near, the acetabulum. The ilium is the cranial 

 part which articulates with the sacrum; the pubis is the ventro- 



