SYMPATHETIC GANGLIA 



609 



oval, reddish gray body, situated just below the foramen ovale. It 

 receives a motor filament from the facial and sensory filaments from 

 branches of the fifth 

 and of the glosso-phar- 

 yngeal. Its filaments of 

 distribution go to the 

 mucous membrane of 

 the tympanic cavity and 

 Eustachian tube and to 

 the tensor tympani and 

 tensor palati muscles. 

 Reasoning from the gen- 

 eral mode of distribu- 

 tion of the sympathetic 

 filaments, those going to 

 the striated muscles are 

 derived from the facial. 

 It also sends branches 

 to the carotid plexus. 



The submaxillary gan- 

 glion, which is situated on 

 the submaxillary gland, 

 is small, rounded, and 

 reddish gray in color. It 

 receives motor filaments 

 from the chorda tympani 

 nerve and sensory fila- 

 ments from the lingual 

 branch of the fifth. Its 

 filaments of distribution 

 go to Warton's duct, to 

 the mucous membrane 

 of the mouth and to the 

 submaxillary gland. 



Cervical Ganglia. 

 The three cervical gan- 

 glia are situated opposite 

 the third, fifth and sev- 

 enth cervical vertebrae 

 respectively. The middle 

 ganglion sometimes is wanting, and the inferior ganglion occasionally is 

 fused with the first thoracic ganglion. These ganglia are connected 



2R 



Fig. 154. Lumbar and sacral portions of the sympathetic 

 (Sappey) . 



I, solar plexus ; 2, lower end of the great splanchnic nerve; 

 3, lower end of the lesser splanchnic nerve ; 4, 4, last two thoracic 

 ganglia; 5, 5, the four lumbar ganglia ; 6, 6, 7, 7, branches from 

 the lumbar ganglia; 8, superior mesenteric plexus; 9, n, 12, 13, 

 aortic lumbar plexus ; 10, inferior mesenteric plexus ; 14, 14, 

 sacral portion of the sympathetic; 15, 15, 16, 16, 17, 17, hypo- 

 gastric plexus. 



