CONTENTS 9 



PAGE 



Arteries of the Extremities 275 



Vitelline and Umbilical Veins: Vena Porta 276 



Anterior Cardinal Veins: Superior Vena Cava 27g 



Posterior Cardinal Veins: Inferior Vena Cava 280 



The Veins of the Extremities 283 



The Fetal Circulation 284 



The Lymphatic System 286 



Lymph Glands 287 



Hasmolymph Glands and Spleen 288 



Chapter X. — Histogenesis 290 



The Entodermal Derivatives 290 



The Mesodermal Tissues , 291 



Sclerotomes and Mesenchyme 291 



Supporting Tissues 292 



Cartilage 294 



Bone 295 



Joints 298 



Muscle 298 



The Ectodermal Derivatives 303 



Epidermis 304 



Hair 305 



Sweat Glands 307 



Mammary Glands 307 



Nails 308 



The Nervous Tissues 309 



The Differentiation of the Neural Tube 310 



Neurones of the Ventral Roots 313 



Spinal Ganglia and their Neurones 313 



The Neurone Theory 315 



The Supporting Tissue of the Nervous System 316 



Chapter XL — Morphogenesis of the Central Nervous System 319 



The Spinal Cord 320 



The Brain 325 



The Differentiation of the Subdivisions of the Brain 330 



Myelencephalon 330 



Metencephalon 333 



Cerebellum 334 



Mesencephalon 335 



Diencephalon 336 



Hypophysis 337 



Telencephalon , 339 



Chorioid Plexus of Lateral Ventricles 340 



Cerebral Hemispheres 346 



Chapter XII. — The Peripheral Nervous System 351 



The Spinal Nerves 351 



Brachial and Lumbo-sacral Plexuses 353 



Cerebral Nerves 355 



Special Somatic Sensory Nerves 355 



Somatic Motor Nerves 358 



Visceral Mixed Nerves 359 



The Sympathetic Nervous System 364 



Chromaffin Bodies : Suprarenal Gland 366 



The Sense Organs 368 



General Sensory Organs 368 



Taste Buds 368 



Olfactory Organ 369 



Eye 373 



Ear 381 



Index 389 



