x CONTENTS 



PACE 



Accessory Factors - 61 



The Supply of Energy 62 

 Digestion - - 66 



Enzymes 66 



Changes in Carbohydrates - 70 



Fat - 73 

 Proteins - - 75 



The Large Intestine 77 



Movements of the Alimentary Canal 78 



Secretion 81 



Respiration - 84 

 The Lungs - 



The Mechanism of Oxidation 89 



CHAPTER III 

 WORK THE MUSCLES 



Length and Work - 96 



Gradation of Contraction. " All-or-Nothing" 97 



Refractory Period - 98 



Staircase - 98 



Voluntary Contraction 98 



Various Muscular Mechanisms - 99 



Posture Phenomena 99 



Energy for other Purposes - 100 



Maintenance and Regulation of Temperature 101 



CHAPTER IV 

 STIMULATION THE SENSES 



Receptors in General 103 



Pain - 106 



Touch 1 06 



Heat and Cold 106 



Taste and Smell 107 



Hearing 107 



Sight 112 



Position Receptors - 117 



Proprio-Ceptors 119 



CHAPTER V 

 ADJUSTMENT THE NERVOUS SYSTEM 



The Reflex - 121 



The Neurone - 121 



Reflex Action 124 



Inhibition 124 



Reciprocal Innervation 125 



Fatigue 126 



The Cerebral Cortex. Conditioned Reflexes 127 



The Nerve Impulse- 130 



The Visceral Nervous System 131 



