CONTENTS. ix 



The (Esophagus and Stomach 336 



The Intestine 338 



Histogenesis of the Gastrointestinal Tract 343 



The Development of the Liver 346 



Histogenesis of the Liver 350 



The Development of the Pancreas 351 



Histogenesis of the Pancreas 354 



Anomalies 355 



Practical Suggestions 359 



References for Further Study 360 



CHAPTER XIII. 



THE DEVELOPMENT OF THE RESPIRATORY SYSTEM 362 



The Larynx 363 



The Trachea 365 



The Lungs 366 



Changes in the Lungs at Birth 369 



Anomalies 370 



Practical Suggestions 370 



References for Further Study 371 



CHAPTER XIV. 



THE DEVELOPMENT OF THE CCELOM, THE PERICARDIUM, PLEUROPERITONEUM, 



DIAPHRAGM AND MESENTERIES 372 



The Pericardial Cavity, Pleural Cavities and Diaphragm 373 



The Pericardium and Pleura 379 



The Omentum and Mesentery 379 



The Greater Omentum and Omental Bursa 380 



The Lesser Omentum 381 



The Mesenteries . . . 382 



The Peritoneum 384 



Anomalies 384 



Practical Suggestions 385 



References for Further Study 386 



CHAPTER XV. 



THE DEVELOPMENT OF THE UROGENITAL SYSTEM 387 



The Pronephros 387 



The Mesonephros ">-. . 389 



The Kidney (Metanephros) 394 



The Ureter, Renal Pelvis, and Straight Renal Tubules 394 



The Convoluted Renal Tubules and Glomeruli 396 



The Renal Pyramids and Renal Columns 400 



Changes in the Position of the Kidneys 402 



