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| Exchanging Materials: Basic Principles Transporting Materials: The Circulatory System The Nature of Blood The Heart Arteries, Veins, and Capillaries Skin: The Body's Container The Structure of the Skin Other Features of the Skin Exchanging Gases: The Respiratory System A Closer Look: Cigarette Smoking and Your Health Obtaining Nutrients: The Digestive System Mechanical and Chemical Processing Nutrient Uptake Nutrition Kinds of Nutrients Guidelines for Obtaining Adequate Nutrients A Closer Look: The Dynamic Skeleton Eating Disorders Deficiency Diseases A Closer Look: Nutritional Needs Associated with Pregnancy and Lactation Waste Disposal: The Excretory System Control Mechanisms The Structure of the Nervous System The Nature of the Nerve Impulse Activities at the Synapse Endocrine System Function Sensory Input Chemical Detection Light Detection Sound Detection Touch Output Mechanisms Muscles A Closer Look: Which Type of Exercise Do You Do? Glands Growth Responses |