viii CONTKXTS. 



CHAPTER X. 



THE DEVELOPMENT OF THE VASCULAR SYSTEM. 

 The Blood Vessels and Blood . . . 



The Heart 



The Septa 



The Valves 



Changes after Birth 



The Vessels 2 3. 



Origin 2 3. 



The Arteries 2 4, 



The Veins 2 5: 



Histogenesis of the Blood Cells .... 270 



The Lymphatic System 2 7< 



The Lymphatic Vessels 2 71 



The Lymph Glands 2 7 ( . 



The Spleen . . 28: 



Glomus Coccygeum 28' 



Anomalies 28; 



Practical Suggestions 280 



References for Further Study 291 



CHAPTER XI. 



THE DEVELOPMENT OF THE MUSCULAR SYSTEM 29^ 



The Skeletal Musculature 

 Muscles of the Trunk 



Muscles of the Head 300 



Muscles of the Extremities 3^ 



Histogenesis of Striated Voluntary Muscle Tissue 30} 



The Visceral Musculature 311 



Histogenesis of Heart Muscle 311 



Histogenesis of Smooth Muscle 312 



Anomalies 313 



Practical Suggestions 314 



References for Further Study 315 



CHAPTER XII. 



Tin DEVELOPMENT OF THE ALIMENTARY TUBE AND APPENDED ORGANS . . 31) 



The Mouth 318 



The Tongue 321 



The Teeth : . . 323 



The Salivary Glands 328 



The Pharynx 330 



The Branchial Epithelial Bodies . 332 



