xii CONTENTS. 



SECTION VII. 



ON SOME OTHER FORMS OF CONTRACTILE TISSUE. 



Plain, smooth or unstriated Muscular Tissue. 



PAGE 



89. Structure of plain muscular tissue ; characters of the fibre cell . 158 



90. Arrangement and termination of nerves in unstriated muscle . . 160 



91. The chemistry of unstriated muscle 161 



92. The characters of the contraction of unstriated muscle. Peristaltic 



contractions. ' Spontaneous' contractions. Tonic contractions 161 



Ciliary Movement. 



93. Structure of a ciliated epithelium cell 164 



94. Nature of ciliary movement. Circumstances affecting ciliary move- 

 ments 165 



Amceboid Movements. 



95. Nature of an amreboid movement ; its relation to a muscular con- 

 traction 168 



CHAPTER III. 



OX THE MORE GENERAL FEATURES OF NERVOUS TISSUES. 



96. The general arrangement of the nervous system. Cerebro-spinal and 

 splanchnic or sympathetic system; somatic and splanchnic 

 nerves 171 



97. The structure of spinal ganglia. The ganglionic nerve cell. Bipolar, 



unipolar and apolar nerve cells 175 



98. The structure of ganglia of the splanchnic or sympathetic system. 



Multipolar cells. Spiral cells 178 



99. Grey matter and white matter of the central nervous system. 



Structure of a nerve cell of the spinal cord ; axis-cylinder process 179 



100. Functions of nerve cells . 180 



101. Eeflex actions; the machinery required. The circumstances de- 

 termining the nature of a reflex action. Keflex actions often 

 purposeful 182 



102. Automatic actions 185 



103. Inhibitory nerves 186 



CHAPTER IV. 

 THE VASCULAR MECHANISM. 



SECTION I. 



THE STRUCTURE AND MAIN FEATURES OF THE VASCULAR APPARATUS. 



104. The chief work of the blood carried on in the capillaries and other 



minute vessels . . 188 



