270 



NERVOUS SYSTEM. 



THE LUMBAR AND SACRAL NERVES. 



(DISTRIBUTION SHOWN ON NEXT TABLE.) 



^ 



External Branch, 



sending filaments 



to the Erector 



spinae and 



Intertransversales 



muscles, and the 



skin of the gluteal 



region, posteriorly. 



An 



Internal Branch, 

 sending filaments 



to the Multifid. 

 spinae, and skin 

 over vertebrae of 



spinal column. 



An 



External Branch, 

 forming loop on 

 sacrum and great 

 Sac-Sciat. lig. to 

 supply skin over 

 glutei. 



Internal Branch, = 

 to Multifidus Spinae 

 and back part of 



coccyx. 



(the two lower 



nerves.) 



Are below the 

 Multifid. Spinae, 

 join together in 

 loops over back 

 of sacrum, 

 sending fila- 

 ments to skin. 



Lumbar. 



limhar 

 >an 



Sacral Cord 



Joins the 



Lumbo- 



Sacral Cord 



and 

 2d Sacral. 



f Joins with 



Div. ] and part 

 of the 4th. 



Br. to 



Plexus, 

 Vise. Brs. 

 Mus. Brs. 

 Fil. to sth. 



Br. to skin of coccyx. 

 Br. to Coccygeus M. 

 Br. to Cocc. Nerve. 



(A delicate filament, going 

 to skin, over coccyx. 



(1) Super. Gluteal. 



(2) Muscular Brs. 



(3) Small Sciatic. 



(4) Great Sciatic. 



(5) Pudic. 



(6) Articular. 



