Unit 13 - Communicable Diseases (Teen Health 2) Flashcards
Disease
Condition that interferes with the normal or proper functioning of the body or mind
Communicable Disease
Disease that can be spread to a person from another person, an animal, or an object
Germs
Organisms that are so small they can only be seen through a microscope
Pathogens
Germs that cause diseases
Infection
Condition that happens when pathogens enter body, multiply, and cause harm
Viruses
Smallest and simplest pathogens
Bacteria
Simple one-celled organisms
Fungi
Organisms that are more complex than bacteria but cannot make their own food
Protozoa
One-celled organisms that are more complex than bacteria
Immune System
Combination of body defenses made up of the cells, tissues, and organs that fight pathogens in the body
Inflammation
Body’s response to injury or disease, resulting in a condition of swelling, pain, heat, and redness
Lymphatic System
Secondary circulatory system that helps the body fight pathogens and maintains its fluid balance
Lymphocytes
Special white blood cells in the blood and lymphatic system
Antigens
Substances that send the immune system into action
Antibodies
Specific proteins that attach to antigens, keeping them from harming the body