Spinal Nerves. 



161 



1. The superior gluteal, 

 N. glutaeus superior, which pas- 

 ses through the great sacro- 

 sciatic foramen above the pyri- 

 formis muscle and sends fila- 

 ments to the M. glutaeus me- 

 dius, minimus and M. tensor 



M. PERONEU5- 



N. CUTAH. _ 

 5URAE EXT. 



comm. long. 



.N. EERON. SUPERF.- 



vaginae femoris. 



2. The inferior glu- 

 teal, JV. glutaeus inferior, 

 passes through the great sacro- 

 sciatic foramen below the pyri- 



formis muscles and supplies jj 8X tens. dicit. 

 the M. glutaeus maximus. 



3. The small sciatic 

 s. N. cutaneus femoris posterior, 

 also passes below the pyri- 

 formis to the buttock, and 

 sends branches partly above 

 the lower border of the M. glu- 

 taeus maximus to the skin of 

 the buttock, partly to the pos- 

 terior side of the thigh. 



4. The great sciatic 

 s. N. ischiadicus, passes through 

 the great sacro-sciatic foramen 

 below the pyriformis muscle 

 to the gluteal region, supplies 

 the MM. gemelli, obturator inter- 

 ims and quadratus femoris, and 

 passes between the great tro- 

 chanter and tuberosity of the 

 ischium to the back of the 

 thigh. 



M. extens. digit^ 

 uomm. brev. 



M. tibial. ant. 



MM. 



interosser 



-N. PEflON. PROF. 



M. extens. 

 halluc. Lone^. 



Tendo 

 M. tibiaL. ant. 



505. The Peroneal Nerve. 



