848 



THE SERVES. 



The superior branch, the largest, ascends towards tlie forehead, and describee a curve with 

 convexity upwards, turns round the orbit, and terminates near its nasal ancjle. In its course it 

 furnishes : 1 An anteiior auricular ramuscule. 2. Above the insertion of the masseter, several 

 muscular filaments. 3. It is crossed, ab^ve the eye, by the superciliary filaments of the 

 ophthalmic nerve. The middle branch accompanies Steno's duct to the surface of the cheek; 

 reaching tlie anti rior border of the masseter, it anastomoses in a very flexuous manner with 

 the ramuscule of the inferior brunch, and t^rminat'^s in the upper lip and the end of the nose. 

 The inferior branch passes towards the maxillary fissure; there it receives the sensitive 



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25 



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ramuscule sent to it by the fifth pair, gives off filaments to the middle branch, and is then 

 continued into the lowei- lip. 



Pneumognstric. — The sem^itive roots closelv resemble, in their disposition, those in the Ox. 

 The motor roots are separated into two series of filaments ; the anterior unite in a small ganglion 

 then pass into the jugular gnnglion; the posterior lie beside the medullary root of the spinal 

 accessory, but leave it to become united with the jugular ganglion. 



Below the foramen lacerum, the pneumogastric nerve gives otf the pharyngeal nerve before 

 forming the analogue of the plexiform ganglion of Man. This plexus is better defined than 

 in him, and is a real fusiform elongated ganglion, at the grey basis of which some white 

 filaments are seen. It is situated a little farther from the cranium than the superior cervical 



