VI 



CONTENTS. 



THE BLOOD-VASCULAR 



SYSTEM. 



General Structure of Blood- Vessels. . 87 



The Arteries 89 



The Veins 91 



The Capillaries 92 



The Blood 94 



The Colored Blood-Cells 94 



The Colorless Blood-Cells 96 



The Blood Plates 97 



Blood-Crystals 98 



Development of the Blood- Vascular 



Tissues 99 



The blood- Vessels 99 



The Erythrocytes 99 



The Colorless Cells 100 



The Heart 101 



The Endocardium 101 



The Myocardium 102 



The Epicardium 103 



Developmentj of the Heart 104 



THE LYMPHATIC SYSTEM. 



General Considerations 105 



The Lymph-Spaces 106 



The Lymph- Vessels 107 



Lymphoid Tissue 108 



The Simple Lymph-Nodules . . . 108 



The Lymph-Nodes 109 



The Hemolymph Nodes 112 



development of the Lymphatic Sys- 

 tem 112 



The Spleen 113 



Accessory Spleens 1 16 



Vascular Appendages 117 



The Carotid Bodies 117 



The Coccygeal Body 118 



MUCOUS MEMBRANES AND 

 GLANDS. 



The Mucous Membranes 119 



The Epithelium 120 



The Tunica Propria 120 



The Submucous Layer 121 



The Blood- Vessels 121 



The Lymphatics 121 



The Nerves 121 



The Glands 122 



General Considerations 122 



Simple Tubular Glands 124 



Compound Tubular Glands 124 



Tubo-Alveolar Glands 124 



Serous Glands 125 



Mucous Glands 126 



Simple Alveolar Glands 127 



Compound Alveolar Glands 127 



Development of Glands 128 



THE ALIMENTARY CANAL. 



The Oral Cavity 129 



The Mucous Membrane 129 



The Teeth 131 



The Enamel 131 



The Dentine 133 



The Cementum 135 



Alveolar Periosteum 135 



The Pulp 136 



Development of the Teeth .... 137 



The Dental Papilla 137 



Formation of Dentine . . 137 



The Enamel-Organ 139 



Formation of Enamel . . 140 



The Tooth-Sac 141 



Formation of Cementum 141 

 The Secondary Dentition ... 141 



The Tongue 142 



The Muscles 142 



The Mucous Membrane 142 



Papillary Area 143 



Papillae 143 



Lymphoid Area 145 



The Lingual Glands 145 



The Oral Glands 146 



The Salivary Glands 147 



The Parotid Gland 148 



The Submaxillary Gland 149 



The Sublingual Gland 149 



The Palate 151 



The Pharynx 152 



The Mucous Membrane 152 



The Lymphoid Tissue 153 



The Faucial Tonsil 153 



The Pharyngeal Tonsil 154 



The CEsophagus 154 



The Mucous Membrane 154 



The Submucous Layer 155 



The (Esophageal Glands ... 155 



The Muscular Coai 156 



The Stomach 157 



The Mucous Coat 157 



The Gastric Glands 158 



The Submucous Coat 160 



The Muscular Coat 161 



The Serous Coat 161 



The Blood- Vessels 162 



The Lymphatics 162 



The Nerves 163 



The Small Intestine 163 



The Mucous Membrane ....... 163 



The Villi 164 



The Plicae Circulares 166 



The Glands 166 



Brunner's Glands 166 



Lieberkiihn's Glands . . . 168 



The Lymph-Nodules 168 



The Solitary Nodules . . 168 

 Peyer's Patches 169 



