141 



Not only does the main trunk of a vessel receive its nerve 

 supply direct from a nerve trunk. Many of the larger arterial branches 

 receive a twig from tlie nerve instead of obtaining their nerves through 

 the medium of a continuation of the nerve plexus from the parent 

 arterial stem. Such an instance is indicated in figure 4, in which a 



N femoralis 



A glutaea inferior, 

 N. glutaeus inferior- 



-N. saplienus 



Muscular artery 



V 



Azygos Nerve 

 Nerve to M. popliteus 



Nerve to M. flexor 

 longus hallucis 



Fig. 2. Fig. 3. 



Fig. 2, Distributioa of nerves to the superficial femoral artery. Note that 

 in this case all vascular nerves came directly from the N. femoralis with the ex- 

 ception of that from the N. saphenus. In many instances one of the vascular nerves 

 is found to arise from the nerve to the M. rectus femoris. 



Fig. 3. Distribution of nerves to the inferior gluteal, popliteal, posterior tibial^ 

 and peroneal arteries. Note the large twig received by the posterior tibial artery 

 immediately above the medial malleolus. Twigs marked V. are distributed to venae 

 comites. 



sural muscular artery is shown to obtain its nerve supply directly 

 from the N. tibialis. 



