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Defenseagainstvocab
Lesson 2- Defense against infection vocabulary
Term | Definition |
---|---|
Infection | A condition that happens when pathogens enter the body, multiply, and cause harm. |
Immune System | A combination of body defenses made up of the cells tissues and organs that fight pathogens in the body |
Inflammation | The body's response to injury or disease, resulting in a condition of swelling, pain, heat and redness. |
Lymphatic System | A secondary circulatory system that helps the body fight pathogens and maintains its fluid balance. |
Lymphocytes | Special white blood cells in the lymphatic system. |
Antigens | Substances that send the immune system into action. |
Antibodies | Proteins that attach to antigens, keeping them from harming the body. |
Immunity | The ability to resist the pathogens that cause a particular disease. |
Vaccine | A preparation of dead or weakened pathogens that is introduced into the body to cause an immune response. |