THE NERVES AND SPINAL CORD 121 



6. In sending orders for the preparation of food and the 



growth of cells, the spinal cord acts through another 

 set of nerve cells and fibers called the sympathetic 

 system. 



7. The sympathetic system sends fine nerves to the mus- 



cles of the arteries and of the intestine. It acts 

 under the control of the spinal cord. 



