ANATOMY IN A NUTSHELL. 



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Under (A) visceral branches, we have branches to the pelvic viscera from 

 the second, third, and fourth sacral nerves. Under (B) muscular branches. 

 (1) The nerve to the Pyriformis comes from the first and second sacral nerves. 

 This nerve leaves the pelvis through the great sacro-sciatic foramen, and after 

 crossing the spine of the ischium enters the Pyriformis muscle on its internal 

 surface. 



PLATE LXXX1. 



Cutaneous Nerve Supply of the Plantab Surface of the Foot. 



(2) The superior gluteal nerve is derived from the fourth and fifth 

 lumbar and first sacral nerve. It leaves the pelvis above the Pyriformis muscle 

 with the gluteal vessles. It supplies the Gluteus medius, Gluteus minimus and 



Tensor fascia femoris. It also sends sympathetic branches, which are gray 

 rami, to the bone, ligament, fascia, and vessels - see sympathetic nerve. 



