CONTENTS. xv 



PAGE 



" 143. The effects on the vessels of the ear of dividing and stimulating 



the cervical sympathetic nerve 264 



144. Course of vase-motor fibres of the ear 265 



145. The effects on the vessels of the submaxillary gland of stimulating 

 the chorda tympani nerve ; vaso-constrictor and vaso-dilator 

 fibres 267 



146. Vaso-motor nerves of other parts of the body. Constrictor and 



. dilator fibres in the sciatic and brachial nerves .... 269 



The Course of Vaso-motor Fibres. 



147. The course of vaso-constrictor fibres 273 



148. The course of vaso-dilator fibres 275 



The Effects of Vaso-motor Actions. 



149. Local and general effects of the constriction and dilation of an 



artery or set of arteries 275 



Vaso-motor Functions of the Central Nervous System. 



150. Vaso-dilator fibres usually employed as part of a reflex action . 277 

 151. Loss of tone resulting from the division of the spinal chord at vari- 

 ous levels. Vaso-motor centre in the spinal bulb . . . 278 



152. The Depressor nerve 280 



153. Rise of blood pressure from stimulation of afferent nerves ; pressor 



effects 281 



154. The limits of the bulbar vaso-motor centre 282 



155. The relation of the bulbar vaso-motor centre to other spinal vaso- 

 motor centres. Dilation, tone, and constriction of blood vessels 283 



156. Summary of vaso-motor actions 284 



157. Instances of vaso-motor actions. Blushing. Effect of warmth on 



skin. Vascular changes in kidney and alimentary canal . . 286 



158. Vaso-motor nerves of the veins 288 



SECTION VII. 

 THE CAPILLARY CIRCULATION. 



159. The normal capillary circulation. The axial core and the plasmatic 



layer 289 



160. Changes in the capillary circulation induced by irritants. The 



phenomena of inflammation 290 



161. The migration of white corpuscles. Stasis 292 



162. Nature of the inflammatory changes 293 



163. Changes in the peripheral resistance due to changes in the blood . 294 



SECTION VIII. 



CHANGES IN THE QUANTITY OP BLOOD. 

 164. Effects of increasing and of diminishing the total quantity of blood 296 



