Chapter 34

__________ are nonspecific defenses against threats. a. Intact skin and mucous membranes b. Tears, saliva, gastric fluid c. Resident bacteria d. Urine flow e. all of the above

Complement proteins __________. a. neutralize toxins b. enhance resident bacteria c. promote inflammation d. form pore complexes e. both a and b f. both \(c\) and \(d\)

__________ trigger immune responses. a. Interleukins b. Lysozymes c. Immunoglobulins d. Antigens e. Histamines f. all of the above

Recognition of specific threats is based on ___________. a. antigen receptor diversity b. recombinations of receptor genes c. mast cell proliferation d. both a and b e. all of the above

Localized __________ is a sign of inflammation. a. nausea b. swelling c. redness d. warmth e. b through d f. all of the above

Antibody-mediated responses work against __________. a. intracellular pathogens b. extracellular pathogens c. extracellular toxins d. both a and c e. both b and c f. all of the above

Immunoglobulin(s) __________ promote(s) antimicrobial activity in mucus-coated surfaces of some organ systems. a. IgA b. IgE c. \(\operatorname{IgG}\) d. IgM e. IgD

__________ are targets of effector cytotoxic T cells. a. Extracellular virus particles in blood b. Virus-infected body cells or tumor cells c. Parasitic flukes in the liver d. Bacterial cells in pus e. Pollen grains in nasal mucus

Match the immunity concepts. __________ inflammation __________antibody secretion __________fast-acting phagocyte __________immunological memory __________autoimmunity a. neutrophil b. effector \(\mathrm{B}\) cell c. nonspecific response d. immune response against own body e. secondary responses