x Essential Health Copyright Goodheart-Willcox Co., Inc. Diseases and Disorders . . . . . . . . . . . . . . . . . . . . . . . 348 Chapter 12 Infectious Diseases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350 Lesson 12.1 Infectious Diseases: What You Should Know . . . . 352 Lesson 12.2 Transmission, Treatment, and Prevention of Infectious Diseases . . . . . . . . . . . . . . . . . . . . . 360 Lesson 12.3 Immunity to Infection . . . . . . . . . . . . . . . . . . . . . . 371 Chapter 12 Review and Assessment . . . . . . . . . . . . . . . . . . . 376 Chapter 13 Sexually Transmitted Infections and HIV/AIDS. . . . . . . 380 Lesson 13.1 Sexually Transmitted Infections: What You Should Know . . . . . . . . . . . . . . . . . . . . . . . . . . 382 Lesson 13.2 Common STIs . . . . . . . . . . . . . . . . . . . . . . . . . . . 388 Lesson 13.3 HIV/AIDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397 Chapter 13 Review and Assessment . . . . . . . . . . . . . . . . . . . 404 Chapter 14 Noncommunicable Diseases . . . . . . . . . . . . . . . . . . . . . . 408 Lesson 14.1 Noncommunicable Diseases: What You Should Know . . . . . . . . . . . . . . . . . . . . . . . . . . 410 Lesson 14.2 Diseases of the Blood Vessels and Heart . . . . . . 414 Lesson 14.3 Cancer: Cells out of Control . . . . . . . . . . . . . . . . . 422 Lesson 14.4 Diabetes, Allergies, Asthma, and Arthritis . . . . . . 430 Chapter 14 Review and Assessment . . . . . . . . . . . . . . . . . . . 436 Mental and Emotional Health and Wellness 440 Chapter 15 Achieving Mental and Emotional Health . . . . . . . . . . . . . 442 Lesson 15.1 Making Sense of Your Emotions . . . . . . . . . . . . . 444 Lesson 15.2 Establishing Your Identity . . . . . . . . . . . . . . . . . . . 450 Lesson 15.3 Understanding Self-Esteem. . . . . . . . . . . . . . . . . 456 Lesson 15.4 Improving Your Mental and Emotional Health . . . 462 Chapter 15 Review and Assessment . . . . . . . . . . . . . . . . . . . 468 Chapter 16 Managing the Stress in Your Life . . . . . . . . . . . . . . . . . . . 472 Lesson 16.1 What Is Stress? . . . . . . . . . . . . . . . . . . . . . . . . . . 474 Lesson 16.2 Stress and Your Physical Health . . . . . . . . . . . . . 480 Lesson 16.3 Stress and Your Intellectual and Emotional Health . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 485 Lesson 16.4 Managing Stress . . . . . . . . . . . . . . . . . . . . . . . . . 490 Chapter 16 Review and Assessment . . . . . . . . . . . . . . . . . . . 496 Unit 5 Unit 6