CONTENTS 



CHAPTER V. 



The Muscle Tissues. 



Smooth Muscle 81 



Cardiac Muscle 84 



Neurogenic and Myogenic Theories of Heart-beat 87 



Skeletal Muscle 88 



CHAPTER VI. 



The Nerve Tissue. 



Histogenesis of Nerve Tissue 94 



The Neuron 95 



The Cyton 95 



Nucleus 96 



Nissl Bodies 96 



Neurofibrils 97 



Golgi Apparatus 97 



Chondriosomes (Mitochondria) 97 



Cytoplasmic Processes 97 



Reflex Arc 97 



The Synapse 98 



Types of Neurons 98 



Unipolar Cells 99 



Bipolar Cells 99 



Multipolar Cells 100 



The Nerve Fiber 101 



Histology of a Peripheral Nerve 102 



Receptors and Effectors 103 



Sensory Endings 104 



Motor Endings 105 



Neurologia 106 



Ependyma Cells 106 



Astrocytes 106 



Microgliocytes 106 



Ganglia 107 



Degeneration of Nerves 108 



Regeneration of Nerves 108 



The Brain and Spinal Cord 109 



Structure of the Spinal Cord » .... 110 



CHAPTER VII. 



The Vascular System. 



The Capillaries 113 



The Arteries 115 



Small Arteries 116 



Medium-sized or Muscular Arteries 116 



Large or Elastic Arteries 117 



The Veins 118 



The Lymph Vessels 119 



CHAPTER VIIL 



The Lymphatic System. 



The Lymph Nodules 122 



Agminated Lymph Nodules 122 



Tonsils 122 



