MANUAL FOR STABLE SERGEANTS. 



37 



lines convejdng 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, cptic nerve; 3, maxillarv nerve 

 (fifth); 4, mandibular 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, cocliac pkxus; 14, semilunar ganglion; 15, 

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

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

 of median nerve; 23, metacarpalnerves; 24, digital branches; 5.5., sympathetic chain; 

 c, inferios cervical plexus; g, gutteral gansrlion; Sj)., 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 wall of the animal. 



