20 Questions
Which line of defense is the innate immune system considered to be?
2nd line of defense
Which type of immunity is specific and considered to be the 3rd line of defense?
Adaptive immunity
Which type of pathogens are intracellular?
Bacteria
Which type of pathogens are extracellular?
Parasites
Which pathogen is an example of an intracellular fungus?
Candida
Which pathogen is an example of an extracellular virus?
HIV
Which pathogen is an example of an intracellular parasite?
Plasmodium
Which pathogen is an example of an extracellular parasite?
Entamoeba
Which type of immunity is generic and non-specific?
Innate immunity
What is the main function of the immune system?
To protect against pathogens
Which type of white blood cell is responsible for phagocytosing bacterial antigens and digesting them in lysosomes?
Neutrophils
Which type of white blood cell is responsible for defense against parasites and releasing factors that destroy extracellular parasites?
Eosinophils
Which type of white blood cell is involved in allergic (hypersensitivity) responses and releases histamines, leukotrienes, prostaglandins, and platelet-activating factor (PAF)?
Mast Cells
Which type of white blood cell can serve as antigen presenting cells (APCs) and phagocytose antigens?
Macrophages
Which organ produces T lymphocytes and is responsible for positive and negative selection of T lymphocytes?
Thymus
Which organ filters and processes antigens from the blood and filters out old red blood cells?
Spleen
Which type of immune system is non-specific and considered the 1st and 2nd line of defense?
Innate immune system
Which type of immune system is specific and considered the 3rd line of defense?
Acquired immune system
Which type of white blood cell is responsible for recognizing self and destroying self-recognizing T cells to prevent autoimmune disease?
T Lymphocytes
Which organs are considered primary organs of the immune system where immune cells are produced?
Bone Marrow and Thymus
Test your knowledge on the immune system and its players, including cells and organs. Learn about the barriers and entry points that help keep a society or community safe.
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