MANUAL FOR STABLE SERGEANTS. 



37 



lines conveying impressions from the nerve endings to the brain 

 or cord and conveying impulses from the brain or cord to the muscles 



FIG. 17. Nervous system of the horse. 1, Brain; 2, optic nerve; 3, maxillary nerve 

 (fifth); 4, mandibiilar nerve (fifth); 5, vagus nerve; 6, medulla oblongata; 7, right 

 bracl.ial plexus; 8, musculo-cutaneous nerve; 9, median nerve; 10, radial nerve; 

 11, ulnar nerve; 12, vagus nerve; 13, coeliac plexus; 14, semilunar ganglion; 15, 

 lumbo-sacral plexus; 16, femoral nerve; 17, great sciatic nerve; 18, peroneal nerve; 

 19, external saphenic nerve; 20. tibial nerve; 21, metatarsal nerve; 22, radial portion 

 of median nerve; 23, metacarpal nerves; 24, digital branches; s. s. , sympathetic chain; 

 c, inferios cervical plexus; g, gutteral ganglion; Sp., great splanchnic nerve; p. m., 

 posterior mesenteric plexus; p, pelvic plexus. (From Strangeways' Veterinary 

 Anatomy.) 



and various organs. In the cerebro-spinal system these impulses 

 are considerably influenced by the will of the animal. 



