Environmental Problems and Human Health Anatomy & Physiology Immune System and Disease Environmental Problems and Human Health Questions How does lead affect the human body? Where does fungus enter a person's body? Does a fungal infection spread from one person to another directly wherever the fungus touches the skin, or does there have to be an entry point, like an open wound? What is long term effect of smoking on your health? What is the difference between a broad spectrum and narrow spectrum antibiotic? Why is alcohol considered a drug? Immune System and Disease View all chapters Nonspecific Defenses Immune Responses Immune System Diseases Environmental Problems and Human Health Prev