164 THE NERVOUS SYSTEM 



The ilio-inguinal nerve emerges through the subcutaneous 



FlG. 70. The Lumbar, Sacral and Pudendal Plexuses. The abdominal 

 and pelvic portions of the sympathetic trunks are also shown. 

 (TURNER'S Anatomy.} 



1. Ilio-hypogastric nerve. 



2. Ilio-inguinal nerve. 



3. Lateral cutaneous nerve of thigh. 



4. Genito-femoral nerve. 



5. Femoral (anterior crural) nerve. 



6. Obturator nerve. 



7. Sciatic nerve. 



8. L. V joining part of L. IV to form the 



lum bo-sacral cord. 



a. Sympathetic trunk. 



b. Coeliac (semilunar) ganglion. 



c. Ganglion impar. 



inguinal ring (external abdominal ring) and supplies the 

 adjoining area of skin over a limited extent. It may be 



