CONTENTS: vii 



PAGE 



V. GENEEATIVE (REPKODUCTIVE) SYSTEM 224 



1. MALE SEXUAL ORGANS 224 



A. Testis 224 



B. Spermatic Ducts 231 



C. Accessory Glands of Male Sexual Organs 234 



1. Prostate 234 



2. Cowper's Glands 235 



D. Penis 235 



2. FEMALE SEXUAL ORGANS 237 



A. Ovary 237 



B. Fallopian Tube 250 



C. Uterus 251 



Placenta 257 



D. Vagina and External Female Genitals 262 



VI. LOCOMOTOE SYSTEM 264 



1. THE SKELETAL SYSTEM 264 



A. Bones 264 



(a) Bone-marrow 265 



(6) Joining together of Bones 267 



(c) Development of Bones 268 



(1) Development of Bone from Cartilage 268 



(2) Development of Bone from Connective Tissue . . . 273 



B. Cartilages 273 



2. MUSCULAR SYSTEM 274 



Development of Muscles 276 



VII. NERVOUS SYSTEM 278 



1. CENTRAL NERVOUS SYSTEM 278 



A. Spinal Cord 278 



B. Medulla, Pons, and Midbrain 287 



C. Cerebral Cortex 291 



D. Cerebellum 293 



E. Meninges 296 



F.^ Blood-vessels of Central Nervous System 298 



2. PERIPHERAL NERVOUS SYSTEM 299 



A. Nerves 299 



B. Ganglia 301 



C. Nerve-endings 304 



(1) Intra-epithelial Nerve-endings 305 



(2) Nerve-endings in Connective Tissue 307 



(3) Nerve-endings in Muscle 312 



(a) Motor Nerve-endings 312 



(6) Sensory Nerve-endings 314 



(4) Nerve-endings in Nervous Tissue 316 



VIII. SENSE ORGANS 318 



1. THE SKIN THE TACTILE ORGAN 318 



(a) Outer Skin 318 



(6) Hairs. 322 



(c) Nails 329 



