CONTENTS ix 



Membrane Bones of the Skull !6o 



Bones Derived from the Branchial Arches 162 



The Appendicular Skeleton T 66 



Development of Joints 173 



Anomalies 177 



References for Further Study -. 181 



CHAPTER X 



THE DEVELOPMENT OF THE VASCULAR SYSTEM 185 



The Blood Vascular System ^5 



Principles of Vasculogenesis ..193 



The Heart ! . 196 



The Septa. 202 



The Valves 205 



Changes after Birth 206 



The Arteries 209 



The Veins 219 



Histogenesis of the Blood Cells 236 



The Lymph Vascular System 242 



The Lymph Glands 249 



The Spleen 252 



Glomus Coccygeum 254 



Anomalies 254 



References for Further Study 259 



CHAPTER XI 



THE DEVELOPMENT OF THE MUSCULAR SYSTEM 262 



The Skeletal Musculature 262 



Muscles of the Trunk 264 



Muscles of the Head 269 



Muscles of the Extremities 272 



Histogenesis of Striated Voluntary Muscle Tissue . . . . . . . .276 



The Visceral Musculature 280 



Histogenesis of Heart Muscle '280 



Histogenesis of Smooth Muscle 281 



Anomalies 282 



References for Further Study 283 



CHAPTER XII 



THE DEVELOPMENT OF THE ALIMENTARY TUBE AND APPENDED ORGANS . 285 



The Mouth . . , . .286 



The Tongue. . .- ..-..;. v ^ .... 289 



