Unit 1. Organization of the Body

• The Human Body: An Orientation
• Chemistry Comes Alive
• Cells: The Living Units
• Tissue: The Living Fabric

• Unit 2. Covering, Support, and Movement of the Body

• The Integumentary System
• Bones and Skeletal Tissue
• The Skeleton
• Joints
• Muscles and Muscle Tissue
• The Muscular System

• Unit 3. Regulation and Integration of the Body

• Fundamentals of the Nervous System and Nervous Tissue
• The Central Nervous System
• The Peripheral Nervous System and Reflex Activity
• The Autonomic Nervous System
• The Special Senses
• The Endocrine System

• Unit 4. Maintenance of the Body

• Blood
• The Cardiovascular System: The Heart
• The Cardiovascular System: Blood Vessels
• The Lymphatic System and Lymphoid Organs and Tissues
• The Immune System: Innate and Adaptive Body Defenses
• The Respiratory System
• The Digestive System
• Nutrition, Metabolism, and Body Temperature Regulation
• The Urinary System
• Fluid, Electrolyte, and Acid-Base Balance

• Unit 5. Continuity

• The Reproductive System
• Pregnancy and Human Development
• Heredity