Vm CONTENTS 



Page 



Chapter VII. — Entodeemal Canal and its Derivatives 159 



Pharyngeal Pouches and their Derivatives 160 



Thyreoid Gland 164 



Larynx, Trachea and Lungs 164 



Digestive Canal 169 



Liver 175 



Pancreas 178 



Body Cavities, Diaphragm and Mesenteries 179 



Chapter VIII. — Urogenital System 195 



Pronephros 195 



Mesonephros 197 



Metanephros 199 



Cloaca, Bladder, Urethra and Urogenital Sinus 205 



Genital Glands and Ducts 20& 



External Genitalia 224 



The Uterus during Menstruation and Pregnancy 230 



The Decidual Membranes 231 



The Placenta 237 



The Relation of Fetus to Placenta 241 



Chapter IX. — Vascular System 243 



■ The Primitive Blood Vessels and Blood Cells 243 



Development of the Heart 247 



Primitive Blood Vascular System 259 



Development of the Arteries 261 



Development of the Veins 26& 



The Fetal Circulation 277 



The Lymphatic System 279 



Lymph and Hemolymph Glands 281 



Spleen 281 



Chapter X. — Histogenesis 285 



The Entodermal Derivatives 283 



The Mesodermal Tissues 284 



The Ectodermal Derivatives 294 



The Nervous Tissues 300 



Chapter XI. — Morphogenesis of the Skeleton and Muscles 309 



The Skeletal System 309 



Axial Skeleton 309 



Appendicular System 315 



The Muscular System 316 



Chapter XII. — Morphogenesis oe the Central Nervous System 321 



The Spinal Cord 322 



The Brain 327 



The Differentiation of the Subdivisions of the Brain ,^32 



Chapter XIII. — The Peripheral Nervous System 353 



The Spinal Nerves 353 



The Cerebral Nerves 357 



The Sympathetic Nervous System 366 



Chromaffin Bodies: Suprarenal Gland 368 



The Sense Organs 37O 



IKDEX 393. 



