CHAPTER 1 Introduction and Organization of the Nervous System Chapter Objectives 2 Central and Peripheral Nervous Systems 2 Major Divisions of the Central Nervous System 2 Major Divisions of the Peripheral Nervous System 10 Early Development of the Nervous System 14 Clinical Notes 17 Clinical Problem Solving 28 Answers and Explanations to Clinical Problem Solving 29 Review Questions 30 Answers and Explanations to Review Questions 31 Additional Reading 32 The Neurobiology of the Neuron and the Neuroglia CHAPTER 2 Chapter Objectives 34 Definition of a Neuron 34 Varieties of Neurons 34 Structure of the Neuron 34 Definition of Neuroglia 53 Astrocytes 53 Oligodendrocytes 54 Microglia 57 Ependyma 58 Extracellular Space 59 Clinical Notes 61 Clinical Problem Solving 63 Answers and Explanations to Clinical Problem Solving 64 Review Questions 65 Answers and Explanations to Review Questions 67 Additional Reading 69 CHAPTER 3 Nerve Fibers, Peripheral Nerves, Receptor and Effector Dermatomes, and Muscle Activity Chapter Objectives 71 Nerve Fibers Peripheral Nerves Conduction in Peripheral Nerves Receptor Endings tents Clinical Problem Solving 467 Answers and Explanations to Clinical Problem Solving 468 Review Questions 469 Answers and Explanations to Review Questions 472 Additional Reading 473 CHAPTER 17 The Blood Supply of the Brain and Spinal Cord Chapter Objectives 475 Blood Supply of the Brain 475 Brain Capillaries 481 Cerebral Circulation 481 Blood Supply of the Spinal Cord 481 Clinical Notes 483 Clinical Problem Solving 493 Answers and Explanations to Clinical Problem Solving 495 Review Questions 497 Answers and Explanations to Review Questions 499 Additional Reading 500 The Development of the Nervous System CHAPTER 18 Chapter Objectives 502 Spinal Cord 502 Brain 504 Clinical Notes 512 Clinical Problem Solving 516 Answers and Explanations to Clinical Problem Solving 516 Review Questions 516 Answers and Explanations to Review Questions 518 Additional Reading 519 APPENDIX Important Neuroanatomical Data of Clinical Significance Index