THE SPINAL SERVES. 



Lumbar & Sacral Plexuses 



'trie. 



Sacra-sciatic Foramen 

 flower part) 



Plate 14 



THE LUMBAR PLEXUS LIES IN THE SUBSTANCE OF THE PSOAS MUSCLE, 



!LIES UPON THE PYRIFORMIS MUSCLE INTHE PELVIS, 



THE SACRAL PLEXUS^' AND is COVE RED BY THE PELVIC FASCIA, AND THE 



1 SCIATICrtND PUDIC ARTERIES 



Fottti., del. 



