CONTENTS. xv 



PAGE 



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



the cervical sympathetic nerve ....... 264 



§ 144. Course of vaso-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 Coarse 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 Si/stem. 



§ 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 of Blood. 



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



