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UNIT 4 — MILESTONE 4 Score 20/20 You passed this Milestone 20 questions were answered correctly. 1 What is the name for the small flap that prevents food and drink from entering the trachea? ... Epiglottis Bronchi Larynx Pharynx Sophia UNIT 4 Milestone 4 Scored 100% CONCEPT Upper Respiratory Tract 2 Which kind of immunity does mucus play a role in? Innate Physical barriers Adaptive General CONCEPT Pathogens 3 Which of the following statements about immunodeficiency is true? It only occurs when the immune system has been intentionally compromised as part of treatment for diseases like cancer. It means the immune system is weak or nonexistent. It means the immune system attacks a person's own cells and organs. It means the immune system is overactive and targets harmless things like pollen or dander. CONCEPT Immune System Disorders and HIV/AIDS 4 Which antibody that inhibits pathogens from binding to the body's cells is found in endocrine gland secretions, such as tears and saliva? IgE IgA IgG IgD CONCEPT Humoral Immunity 5 Which set of facts is true for vaccines? They produce passive immunity. They are mostly targeted against bacteria [Show More]

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