x CONTENTS. 



CHAPTER X. 



The Development or the Vascular System ...222 



The Blood Vessels and Blood . .222 



The Heart . . . . 222 



The Septa . . ... 229 



The Valves . . ... -231 



Changes after Birth ... . . . 233 



The Vessels . . .... 235 



Origin . . . 235 



The Arteries . 243 



The Veins ....... . . 253 



Histogenesis of the Blood Cells . . .270 



The Lymphatic System . 276 



The Lymphatic Vessels . 276 



The Lymph Glands . 279 



The Spleen . 282 



Glomus Coccygeum . ... 285 



Anomalies 285 



Practical Suggestions ... ... . . .... 289 



References for Further Study .... . . 291 



293 

 293 

 2 9S 

 300 



3°3 



CHAPTER XL 



The Development of the Muscular System ... 

 The Skeletal Musculature . 



Muscles of the Trunk . . . 



Muscles of the Head .... 



Muscles of the Extremities 



Histogenesis of Striated Voluntary Muscle Tissue . . ... 307 



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. 



The Development of the Alimentary Tube and Appended Organs 317 



The Mouth ... 3I 8 



The Tongue . .... 321 



The Teeth ,23 



The Salivary Glands . 328 



The Pharynx . . . ,, 



The Branchial Epithelial Bodies 332 



