PART I       THE ORGANIZATION OF THE BODY

Chapter 1   Humans in the World of Biology    1

Chapter 2   Chemistry Comes to Life      14

Chapter 3   The Cell     37

Chapter 4   Body Organization and Homeostasis      62

PART II      CONTROL AND COORDINATION OF THE BODY

Chapter 5   The Skeletal System    82

Chapter 6   The Muscular System           97

Chapter 7   Neurons: The Matter of the Mind   110

Chapter 8   The Nervous System            124

Chapter 8a SPECIAL TOPIC   Drugs and the Mind     142

Chapter 9   Sensory System          152

Chapter 10 The Endocrine System         174

PART III     MAINTENANCE OF THE BODY

Chapter 11 Blood        197

Chapter 12 The Circulatory System         211

Chapter 13 Body Defense Mechanisms            234

Chapter 13a SPECIAL TOPIC  Infectious Disease      256

Chapter 14 The Respiratory System        268

Chapter 14a SPECIAL TOPIC  Smoking and Disease          287

Chapter 15 The Digestive System         296

Chapter 15a SPECIAL TOPIC  Nutrition and Weight Control                313
Chapter 16 The Urinary System     329

PART IV     REPRODUCTION

Chapter 17 Reproductive Systems          349

Chapter 17a SPECIAL TOPIC  Sexually Transmitted Diseases and AIDS        370

Chapter 18 Development Throughout Life                382

PART V      GENETICS AND DEVELOPMENT

Chapter 19 Chromosomes and Cell Division             405

Chapter 19a Stem Cells——The Body’s Repair Kit               424

Chapter 20 Genetics and Human Inheritance           430

Chapter 21  DNA and Biotechnology       447

Chapter 21a SPECIAL TOPIC  Cancer      468

PART VI     EVOLUTION AND ECOLOGY

Chapter 22 Evolution and Our Heritage           480

Chapter 23  Ecology, the Environment, and Us         501

Chapter 24  Human Populations, Limited Resources, and Pollution   519