Human Biology and Health 14
Nature of Science:Finding a Balance in Nutrition 14
Chapter 1 Healthy Body Systems 18
1 How the Body Is Organized 20
2 Keeping the Body in Balance 27
3 Integrating Health:Wellness 32
Chapter 2 Bones,Muscles,and Skin 40
1 The Skeletal System 42
2 Integrating Technology:Diagnosing Bone and Joint Injuries 50
3 The Muscular System 54
4 The Skin 60
Chapter 3 Food and Digestion 70
1 Food and Energy 72
2 Integrating Health:Healthy Eating 81
3 The Digestive Process Begins 86
4 Final Digestion and Absorption 94
Chapter 4 Circulation 102
1 The Body's Transportation System 104
2 A Closer Look at Blood Vessels 111
3 Blood and Lymph 117
4 Integrating Health:Cardiovascular Health 124
Chapter 5 Respiration and Excretion 132
1 The Respiratoty System 134
2 Integrating Health:Smoking and Your Health 144
3 The Excretory System 149
Chapter 6 Fighting Disease 158
1 Infectious Disease 160
2 The Body's Defenses 165
3 Preventing Infectious Disease 174
4 Noninfectious Disease 179
5 Integrating Environmental Science:Cancer and the Environment 186
Chapter 7 The Nervous System 192
1 How the Nervous System Works 194
2 Divisions of the Nervous System 200
3 The Senses 208
4 Integrating Health:Alcohol and Other Drugs 216
Chapter 8 The Endocrine System and Reproduction 228
1 The Endocrine System 230
2 The Male and Female Reproductive Systems 235
3 Pregnancy,Birth,and Childhood 241
4 Integrating Health:Adolescence—A Time of Change 248
Interdisciplinary Exploration:The Olympic Games 258
Reference Section 264
Skills Handbook 264
Think Like a Scientist 264
Making Measurements 266
Conducting a Scientific Investigation 268
Thinking Critically 270
Organizing Information 272
Creating Data Tables and Graphs 274
Appendix A:Laboratory Safety 277
Glossary 280
Index 286
Acknowledgments 292
Inquiry Activities 19
CHAPTER PROJECT 19
Opportunities for long-term inquiry 19
Chapter 1:Time for a Change 19
Chapter 2:On the Move 41
Chapter 3:What's for Lunch? 71
Chapter 4:Travels of a Red Blood Cell 103
Chapter 5:Get the Message Out 133
Chapter 6:Stop the Invasion! 159
Chapter 7:Tricks and Illusions 193
Chapter 8:A Precious Bundle 229
Sharpen your Skills 28
Practice of specific science inquiry skillsInterpreting Data 28
Classifying 46
Predicting 74
Creating Data Tables 114
Calculating 147
Posing Questions 163
Drawing Conclusions 180
Controlling Variables 202
Designing Experiments 214
Communicating 218
Graphing 239
Designing Experiments 245
DISCOVER 20
Exploration and inquiry before reading 20
How Do You Lift Books? 20
What Happens When You Are Startled? 27
How Well Do You Take Care of Your Health? 32
Hard as a Rock? 42
What Do X-Ray Images Show? 50
How Do Muscles Work? 54
What Can You Observe About Skin? 60
Food Claims—Fact or Fiction? 72
Do Snack Foods Contain Fat? 81
How Can You Speed Up Digestion? 86
Which Surface Is Larger? 94
How Hard Does Your Heart Work? 104
How Does Pressure Affect the Flow of Blood? 111
What Kinds of Cells Are in Blood? 117
Which Foods Are"Heart Healthy"? 124
How Big Can You Blow Up a Balloon? 134
What Are the Dangers of Smoking? 144
How Does Filtering a Liquid Change What Is In It? 149
How Does a Disease Spread? 160
Which Pieces Fit Together? 165
What Substances Can Kill Pathogens? 174
What Happens When Airflow is Restricted? 179
What Does Sunlight Do to the Beads? 186
How Simple Is a Simple Task? 194
How Does Your Knee React? 200
What's in the Bag? 208
How Can You Best Say No? 216
What's the Signal? 230
What's the Big Difference? 235
How Many Ways Does a Child Grow? 241
How Do Ads Portray Teenagers? 248
TRY Tuis 22
Reinforcement of key concepts 22
How Is a Book Organized? 22
Wellness in the Balance 34
Soft Bones? 44
Get a Grip 56
Sweaty Skin 63
Modeling Peristalsis 89
Break Up! 95
Caught in the Web 120
Blocking the Flow 125
Do You Exhale Carbon Dioxide? 139
Stuck Together 170
Why Do You Need Two Eyes? 209
Tick!Tick!Tick! 212
Way to Grow! 243
Skills Lab 59
In-depth practice of inquiry skills 59
A Look Beneath the Skin 59
As The Stomach Churns 92
Heart Beat,Health Beat 116
A Breath of Fresh Air 143
Causes of Death,Then and Now 184
Ready or Not 199
Growing Up 254
Real-World Lab 26
Everyday application of science concepts 26
A Body of Knowledge 26
Sun Safety 64
Iron for Breakfast 80
Do You Know Your A-B-O's? 123
Clues About Health 152
The Skin as a Barrier 172
With Caffeine or Without? 220
Interdisciplinary Activities 75
Math Toolbox 75
Calculating Percent 75
Pulse Rate 112
Science and History 126
Cardiovascular Advances in the Twentieth Century 126
Fighting Infectious Disease 176
Science and Society 98
Advertising and Nutrition 98
Should People Be Required to Wear Bicycle Helmets? 207
Connection 30
Language Arts 30
Visual Arts 48
Social Studies 76
Language Arts 108
Social Studies 140
Social Studies 167
Visual Arts 203
Social Studies 251