206 



TEXT-BOOK OF EMBRYOLOGY. 



, Crural nerve 



Ilium I 



Pubic bone (cartilage) 



ra 5 "* Obturator ne 



Ischium 



Ischiadic nerve 



FIG. 184. Cartilage of right side of pelvic girdle of a human embryo of 13.6 mm. 



(5 weeks). Petersen. 

 The numerals indicate the vertebras; the first sacral being opposite the ilium. 



Iliu: 



\ 



Crural nerve 



Pubic bone (cartilage) 



Obturator nerve 

 Ischium 



Ischiadic nerve 



FIG. 185. Cartilage of right side of pelvic girdle of a human embryo of 18.5 mm. 



(8 weeks). Petersen. 



The numerals indicate the vertebrae; the first and second sacral being opposite the ilium. 



Compare with Fig. 184. 



