FIGURE 189 



189 Reconstruction of cephalic portions of azygos veins and anlages of 

 azygos segment of thoracic ducts in a 14 mm. cat embryo; series 34 (Princeton 

 Embryological Collection), slides XXIV to XXXII, 222 sections, X 225. Ventral 



1 Sympathetic nerve. 



3 Right precava. 



3' Right azygos vein, thoracic portion. 



6 Left precava. 



6' Left azygos vein, thoracic portion. 



34 Ventro-medial azygos plexus. 



