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Science Explosion 16
BJU 6th Science - Chapter 15
Question | Answer |
---|---|
communicable | contagious |
non communicable | non contagious |
pathogen | anything that causes a disease |
vector | insect or animal that carries a pathogen |
epidemic | when a disease spreads to a large number of people in a short time |
airborne pathogen | spreads through the air |
contact | spread by touch |
food-borne | contamination by food |
water-borne | contamination by water |
epidemiologist | scientist who studies cause and spread of disease in communities |
defensive barrier | helps keep pathogens out of body (like skin) |
cilia | tiny hair-like projections that line air passages |
inflammatory response | non-specific defense (swelling, pain, redness) |
immune response | specific defense (lymph, white blood cells) |
antibody | special proteins that can destroy pathogens |
memory cell | white blood cells (WBCs) that remember the "enemy" |
immunity | special protection against disease |
vaccine | shot that contains dead or weakened pathogens |
antibiotic | chemical that can destroy bacteria |
allergen | anything that causes the immune system to have an allergic reaction |
autoimmune disease | when immune system attacks own healthy cells |