1)  Which of the following is not a External Barriers?  a) Skin b) Cilia  c) HCl in the Stomach d) Mucous Membranes  e) Urinary pH f) Natural Killer Cells 2) What is an example of a PAMP? a) Natural Killer Cells b) Phagocytes c) Toll-like Receptors  d) RIG-like receptors  e) Lipopolysaccharide 3) What is a not a definition of a Dendritic Cell? a) Dendritic cells are antigen-presenting cells that are located in tissues. b) Dendritic cells contact external environments through the skin, the inner mucosal lining of the nose, lungs, stomach, and intestines. c) Dendritic cells are located in tissues that are common points for initial infection d) They identify threats and act as messengers for the rest of the immune system by antigen presentation. e) Act as bridge between the innate immune system and the adaptive immune system. f) They are present on the coat protein of a virus 4) Which of the following is False? a) C3 is cleaved by the alternative pathway b) Defensins are produced by cuboidal cells c) C3 is cleaved by the lectin pathway d) The complementary system is complementive to the innate and adaptive system e) The complement system is a collection of soluble proteins. f) C3 is cleaved by the classical pathway 5) What is not an example of a type of Phagocytes? a) Macrophages b) Neutrophils c) Interferons d) Basophils  e) Mast cells f) Eosinophils

Innate Immunity

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