96 



PSYCHOBIOLOGY 



distance from the cord or brain, and the fiber (from cord or brain-stem 

 to ganglion) is called a preganglionic fiber. From the ganglion the 



Fig. 76. The distribution and connections of the sympathetic and vagus nerves on 

 the right side. (Quain's Anatomy, Vol. Ill, Pt. II, after Hirschfeld and Laveille.) 

 The sympathetic chain of ganglia is shown from the inferior cervical ganglion down 

 to the first lumbar ganglion (58). Ganglia: 4, ciliary; 5, spheno-palatine ; 6, otic; 7, 

 submaxillary; 21, 33, 38, superior, middle and inferior cervical; 48, semi-lunar. 

 Glands: a, lachrymal; d, thyroid. A, Heart, g, Stomach. 28, Vagus nerve. 47, 

 Great splanchnic nerve. Plexuses: 42, cardiac ; 50, solar ; 53, gastric. 



connection with the smooth muscle or gland is completed by an axon or 

 dendrite of a second neuron, called a post=ganglionic fiber. 



