xvi CONTEXTS * 



CHAPTER XIII. 



THE PHYSIOLOGY OF THE CONTRACTILE TISSUES. 



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SECTION I. PRELIMINARY OBSERVATIONS PHYSICAL AND TECH- 

 NICAL DATA - 723 

 Cilia - ... - 733 



SECTION II. PHYSICAL PROPERTIES AND STIMULATION OF 



MUSCLE - - - 735 



Elasticity of muscle - - 735 



Stimulation of muscle - - 737 



Direct excitability of muscle - - 738 



SECTION III. PHYSICAL AND MECHANICAL PHENOMENA OF THE 



MUSCULAR CONTRACTION - - 742 

 Optical phenomena structure of muscle - - 742 

 Mechanical phenomena ... 745 

 Muscular fatigue - - ' - 749 

 Electrical tetanus - - - 756 

 Voluntary contraction - 760 

 Thermal phenomena and transformation of energy in. mus- 

 cular contraction - - 762 

 Relation between mechanical energy and heat-production in 

 active muscle - - 765 



SECTION IV. CHEMICAL PHENOMENA OF MUSCULAR CONTRACTION 767 



Formation of lactic acid - 769 



The substances metabolized in muscular contraction - 771 



Rigor - ... 774 



CHAPTER XIV. 

 NERVE. 



SECTION I. THE NERVE-IMPULSE OR PROPAGATED DISTURB- 

 ANCE: ITS INITIATION AND CONDUCTION - - 781 

 Stimulation of nerve - - 783 

 Excitability of nerve - .... 784 

 Electrotonus - - .... 785 

 Conduction in nerve - .... 790 

 Velocity of the nerve-impulse .... 793 



SECTION II. CHEMISTRY, DEGENERATION, AND REGENERATION 



OF NERVE ... . 794 



Chemistry of nerve - ... 794 



Degeneration of nerve ..... 795 



Regeneration of nerve - - - - . 798 



Trophic nerves - ... 805 



Classification of nerves - .... 807 



