DIVISIOXS 



SPINAL \i-:i;vi-:s 



909 



The lateral branches of the upper six thoracic nerves pass bet \\een the longis- 

 siiiius ilnrsi and the ilio-costalis dorsi (acccsxirins) ami end in t ho.-e muselo, but tin- 

 lateral branches of the six lower nerves are longer; they pass into the interval 

 between the longiesimua dorsi and the ilio-costalis dorsi and give branches to them, 

 and then they pierce the laf issimus dorsi and are distributed to the skin of the lower 

 and lateral part of the back. 



9 



Flo. 674. DiSTRiBrnnx in mi. 1',,-rKRioR PRIMARY DIVISIONS OF THE SPINAL 



.\I.K\ i .>. IHenle.) 



Trapezius 



Semispinalis colli 



Multifldui spinao 





Rhomboideua 

 major 



LtTMBAR ^ T ERVKS 



The medial branches of the posterior primary divisions of all the lumbar nerves 

 end in the multifidus spline and those of the three lower nerves send very small 

 branches to the skin of the sacral region. 



