CONTENTS. ix 



CHAPTER II. 

 THE CONTRACTILE TISSUES. 



FAOB 



39. The movements of the body carried out by means of various kinds of 



contractile tissues 61 



SECTION L 



THE PHENOMENA OF MUSCLE AND NEHVB. 

 Muscular and Nervous Irritability. 



40. Irritability ; contractility ; stimuli 63 



41. Independent muscular irritability ; action of urari .... 64 



42. Simple and tetanic contractions 66 



43. The muscle-nerve preparation 66 



44. Various forms of stimuli. Induction Coil. Key. Magnetic Inter- 

 rupter. Electrodes. Method of graphic record .... 66 



The Phenomena of a Simple Muscular Contraction. 



45. The muscle-curve. Myographs. Time measurements. Signals . 66 



46. Analysis of a simple muscle-curve 71 



47. Variations of the muscle-curve. The shortening accompanied by 



thickening 74 



48. Simple muscular contractions rare in the living body . . . .76 



Tetanic Contractions. 



49. Tetanic contractions. Analysis of the curve of tetanus . . .76 



60. Various degrees of tetanic contractions 79 



61. Diminution and disappearance of irritability after death . . .80 



SECTION IL 



ON THE CHANGES WHICH TAKE PLACE IN A MUSCLE DURING A 

 CONTRACTION. 



The Change in Form. 



52. Gross structure of muscle, arrangement of muscular fibres, blood 



vessels and nerves 82 



63. The wave of contraction ; its length, velocity, and other characters . 83 

 64. The visible changes which take place in a muscular fibre during a 



contraction 86 



The Chemistry of Muscle. 



65. Contrast of living and dead muscle ; rigor mortis .... 86 

 66. Chemical bodies present in dead muscle ; myosin, syntonin . . 87 



