Contents 1 1 



Page 

 System, 168; Hepatic Portal System, 168; The Histology of the Blood 

 Vessels, 169; The Physiology of the Circulatory System, 171 ; The Heart- 

 beat, 171 ; Heart Sounds, 172; Heart Muscle Activity, 173; Blood Pressure 

 and Rate of Flow, 174; The Blood, 176; The Formed Elements of the 

 Blood. 176; The Liquid Portion of the Blood, 178; Clotting of Blood, 

 179; Blood Types, 180; The Rh Factor, 181; The Lymphatic System, 182. 



CHAPTER 11 



THE URINARY SYSTEM 184 



The Functions of the Urinary System, 186; The Anatomy of the Mam- 

 malian Urinary System, 186; The Kidneys, 187; The Kidney Tubule, 188; 

 Accessory Urinary Structures, 189; The Physiology of the Urinary 

 System, 189; The Formation of Urine, 189; Urine, 190; Micturition, 191. 



CHAPTER 12 



THE NERVOUS SYSTEM AND SENSE ORGANS 192 



The Functions of the Nervous System, 193 ; The Anatomy of the Nervous 

 System, 194; The Structural Unit of the Nervous System, 194; The 

 Functional Unit of the Nervous System, 195; The Central Nervous 

 System: The Brain, 196; The Central Nervous System: The Spinal 

 Cord, 202 ; The Peripheral Nervous System, 203 ; The Autonomic Nervous 

 System, 206; The Physiology of Nerve Conduction, 207; The Nerve Im- 

 pulse, 207; The Reflex Arc, 209; Brain Waves, 210; Sleep, 211 ; The Sense 

 Organs, 211 ; The Exteroceptors of the Skin, 213; The Interoceptors, 213; 

 Chemical Receptors, 214; The Eye, 215; The Auditory Mechanism, 220; 

 The Balancing Mechanism, 223. 



CHAPTER 13 



THE ENDOCRINE SYSTEM .• V^, V ooo' ^^^ 



The Function of the Endocrine System, 227; The Thyroid Gland, 228; 

 The Function of the Thyroid Gland, 228 : The Composition of lodothyro- 

 globulin, 228; The Effects of Hypoactivity, 229; The Effects of Hyper- 

 activity, 230; Thyroid Activity in Other Animals, 230; The Parathyroid 

 Glands, 231; The Function of the Parathyroid Glands, 231; The Secre- 

 tion of the Parathyroids, 232; The Effect of Hypoactivity, 232; The 

 Effects of Hyperactivity, 233; The Adrenal Gland, 233; The Adrenal 

 Medulla, 234 ; The Function of the Adrenal Medulla, 234 ; The Composi- 

 tion of Adrenaline, 234 ; The Adrenal Cortex, 235 ; The Function of the 

 Adrenal Cortex, 235 ; The Secretion of the Cortex, 236 ; The Effects of 

 Hypoactivity, 236 ; The Effects of Hyperactivity, 236 ; The Pancreas, Z37 ; 

 The Function of the Islets of Langerhans, 237 ; The Composition of Insulin, 

 238; The Effects of Hypoactivity, 238; The Effects of Hyperactivity, 239; 

 The Action of the Islets in Other Animals, 239 ; The Gonads, 240; The 

 Male Gonad, 240 ; The Function of the Interstitial Cells, 240; The Composi- 

 tion of the Male Hormone, 241 ; The Effect of Hyposecretion 241 ; The 

 Effects of Hyperactivity, 241 ; The Female Gonad, 241 ; The Function of 

 the Female Hormones, 242; The Composition of the Female Hormones, 

 242; The Effect of Hypoactivity, 243; The Pituitary Gland 243; The An- 

 terior Lobe, 244; The Function of the Growth Hormone, 244; The Inunc- 

 tion of the Trophic Hormones, 244; The Function of the Lactogenic Hor- 

 mone, 246; The Composition of the Secretions of th^ Anterior Pituitary, 

 247 ; The Effect of Hypoactivity, 247 ; The Effect ^^ hyperactivity 247 

 The Intermediate Lobe, 247 ; The Posterior Lobe 247 ; The F™f «" "J 

 Pitocin, 247; The Function of Pitressin. 248 ; The Composition of P tuitnn 

 248; The Effect of Hypoactivity, 248; The Digestive Hormones, 248 Other 

 Possible Endocrine Structures, 249; The Thymus Gland, 249, The Pineal 

 Gland, 249 ; Invertebrate Hormones, 249. 



