1 68 



THE NERVOUS SYSTEM 



The Obturator Nerve also arises from the second, third and 

 fourth lumbar segments, but it pursues a different course 

 from that adopted by the femoral nerve. It pierces the medial 



FIG. 71. The Nerve-supply of the Skin on the Anterior Aspect 

 of the Lower Limb. 



A. The individual nerves of supply. 



B. The segmental supply. 



1. Lateral cutaneous nerve. 



2. Lumbo-inguinal nerve (crural branch 



of geni to-crural nerve). 



3. Intermediate (middle) and medial 



cutaneous nerves. 



4. Obturator nerve. 



5. Lateral sural nerve. 



6. Saphenous nerve. 



7. Superficial peroneal (musculo-cutan- 



eous) nerve. 



8. Medial branch of deep "peroneal (ant- 



erior tibial) nerve. 



border of the psoas major and passes forwards on the lateral wall 

 of the pelvis, just below the brim, lying in the floor of the 

 fossa ovarica in the female (p. 393). It leaves the pelvis by 



