xvi CONTENTS 



PAGE 



nerves Nervous excitability and conductivity Rapidity of nervous conduction 

 Personal equation Action of electricity on the nerves Law of contraction 

 Electric current from the exterior to the cut surface of a nerve Electrotonus, 

 anelectrotonus and catelectrotonus . -455 



CHAPTER XIX 

 SPINAL NERVES MOTOR CRANIAL NERVES 



Spinal nerves Cranial nerves Motor oculi communis (third nerve) Physiological 

 anatomy Properties and uses of the motor oculi communis Patheticus, or troch- 

 learis (fourth nerve) Physiological anatomy Properties and uses of the patheticus 



Motor oculi externus, or abducens (sixth nerve) Physiological anatomy Prop- 

 erties and uses of the motor oculi communis Nerve of mastication (the small, or 

 motor root of the fifth nerve) Physiological anatomy Properties and uses of the 

 nerve of mastication Facial, or nerve of expression (seventh nerve) . Physiological 

 anatomy General properties of the facial Uses of branches of the facial given off 

 within the aqueduct of Fallopius Uses of the chorda tympani Influence of certain 

 branches of the facial on the movements of the palate and uvula Uses of the ex- 

 ternal branches of the facial Spinal accessory (eleventh nerve) Physiological 

 anatomy Properties and uses of the spinal accessory Uses of the internal branch 

 from the spinal accessory to the pneumogastric Influence of the internal branch of 

 the spinal accessory on deglutition Influence of the spinal accessory on the heart 



Uses of the external, or muscular branches of the spinal accessory Sublingual 

 (twelfth nerve) Physiological anatomy Properties and uses of the sublingual . 492 



CHAPTER XX 

 TRIFACIAL NERVE PNEUMOGASTRIC NERVE 



Trifacial (large root of the fifth nerve) Physiological anatomy Properties and uses of 

 the trifacial Immediate effects of division of the trifacial Remote effects of divi- 

 sion of the trifacial Pneumogastric (tenth nerve) Physiological anatomy Prop- 

 erties and uses of the auricular nerves Properties and uses of the pharyngeal nerves 



Properties and uses of the superior laryngeal nerves Properties and uses of the 

 inferior, or recurrent laryngeal nerves Properties and uses of the cardiac nerves 

 Depressor nerve Properties and uses of the pulmonary nerves Effects of division 

 of the pneumogastrics on respiration Effects of faradization of the pneumogastrics 

 on respiration Properties and uses of the oesophageal nerves Properties and uses 

 of the abdominal nerves Influence of the pneumogastrics on the liver Influence 

 of the pneumogastrics on the stomach and intestines Effects of faradization In- 

 fluence of section of the pneumogastrics on the movements of the stomach Influence 



of the pneumogastrics on the small intestine 521 



CHAPTER XXI 

 THE SPINAL CORD 



Membranes of the encephalon and spinal cord Cephalo-rachidian liquid Physiological 

 anatomy of the spinal cord Columns of Tiirck Crossed pyramidal tracts An- 

 terior ground columns Lateral bundles Ascending and descending cerebellar 

 fasciculi Direct cerebellar fasciculi Columns of Burdach Columns of Goll 

 Directions of nerve-fibres in the cord General properties of the spinal cord Re- 

 lations of the posterior white columns of the cord to muscular coordination 

 Nerve-centres in the spinal cord Reflex action of the spinal cord Reflexes in man 545 



