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Disease I will classify diseases as infectious and noninfectious. My goal is_____________. noninfectious disease a disease that is not contagious chronic lasting for a long time Chapter 14 Review allergy an abnormal reaction to a foreign substance immune response the steps taken by the immune system when invaded by pathogens immunity the ability to protect against pathogens before getting sick lymph nodes areas that filter lymph and trap pathogens genetic disorder a noncontagious disease that is usually inherited allergen something that causes an allergy virus a nonliving microscopic particle that often causes disease acute beginning suddenly and lasting for a short time infectious disease a disease that is contagious and is caused by a pathogen lymphatic system part of the immune system and helps fight pathogens Three ways that infectious and noninfectious diseases are alike are both are abnormal conditions causing illness, both produce symptoms , and both can be either acute or chronic Eight components of the immune and lymphatic systems are lymph nodes, lymphatic vessels, thymus, tonsils, adenoids, appendix, bone marrow, and spleen Chapter 14 Quiz Word Bank allergen geneticdisorder virus infectiousdisease chronic noninfectiousdisease acute immunity lympathicsystem allergy lymphnodes immuneresponse List three ways that infectious and noninfectious diseases are alike List eight components of the immune and lymphatic systems. Pathogens • pathogen- an organism or particle that causes disease • infectious disease- contagious disease caused by pathogens • noninfectious disease- a disease caused by pathogens and is not contagious • Four common groups of pathogens are bacteria, viruses, fungi, and protists Infectious Diseases • acute-suddenly and lastly for a short time • chronic- for a long time and/or reoccurring frequently • virus-nonliving particle that can infect cells and cause disease • Bacteria are masters of change • Viruses are about 300 times smaller than cells Noninfectious Diseases • genetic disorder-an abnormal condition that is usually inherited through genes • allergy-an abnormal reaction to a foreign substance • allergen-substance that provokes allergies • Noninfectious diseases are either acute(stroke) or chronic (diabetes or cancer) • The three ways that infectious and noninfectious diseases are alike are they both are abdominal conditions causing illness, both produce symptoms, and both can be either acute or chronic The Immune System • lymphatic system-a major component of he immune system that protects the body from pathogens • lymph node- a rounded mass of tissues that filters fluids from other body tissues and traps pathogens’ • immune response-the series of reactions that take place when white blood cells fight against infection. • Components in the immune system are the thymus, spleen, and tonsils • All white blood cells are first produced in the bone marrow • The eight components of the immune and lymphatic system are lymph nodes, lymphatic vessels, thymus, tonsils, adenoids, appendix, bone marrow, and spleen Immunity • Immunity-the body’s ability to protect itself from pathogens before they cause disease • active immunity-a type of immunity in which the immune system produces antibodies in response to the presence of a pathogen • Your body acquires active immunity in two ways. One is by getting the disease first. The other is from vaccinations