THE STRUCTURE OF THE SYMPATHETIC NERVES. 



257 



plexuses, such as the laryngeal, pharyngeal, the pulmonary, the renal, 

 and others. The cardiac plexus is derived from the descending cardiac 

 branches of the cervical sympathetic ganglion, mixed with branches of 

 the pneumogastric; the great solar plexus is situated in the abdomen, 



life. 62 



Fig. 62. The nerves. On the face and head, are branches of the facial, trigeminal, and cervical nerves. 

 In the neck, are the cervical :md hrachial plexuses and nerves. In the thorax, abdomen, and pelvis, is 

 seen the right sympathetic nerve, consisting of a ganglionated cord connected with the intercostal nerves, 

 and giving off branches in front, to the prevertebral plexuses, which supply the viscera, e. ff., the heart, h, 

 the stomach, s. the intestines, ?', and the kidney, k, near which is seen the solar plexus. The lumbar plexus 

 is seen in the pelvis. 



in front of the aorta, and is derived from the three splanchnic nerves 

 proceeding from the lower six thoracic ganglia, and from branches 

 given off from the gray matter of a large sympathetic ganglion, named 



17 



