NU 545 ch 7 Exam Questions With Correct
Answers
Cathelicidins - answerFamily of antimicrobial peptides that in humans has one member.
Defensins - answerantimicrobial peptides that inhibit microbial growth
Mannose-binding lectin (MBL) - answersoluble acute-phase protein in the blood that binds t...
Anaphylaxotoxins - answer✔they induce rapid mast cell de granulation and release of histamine,
causing vasodilation and increased capillary permeability. Occur early in inflammation, close to
the inflammatory site.
alternative pathway - answer✔activated by gram negative bacteria and fungal cell wall
polysaccharides
complement cascade - answer✔a precise sequence of events, usually triggered by antigen-
antibody complexes, in which each component of the complement system is activated in turn
antigen-antibody complex - answer✔the complex formed when an antibody binds to an antigen.
C3 convertase - answer✔the enzyme complex that catalyzes a crucial step in complement
activation—the deposition of large numbers of C3 molecules on a cell's surface, which tags the
cell for removal by phagocytes or starts the assembly of the membrane attach complex.
chemotactic factors - answer✔Biochemical substance that attracts leukocytes to the site of
inflammation. Required for a longer period and occurs distal to the inflammatory site.
Carboxypeptidase - answer✔Plasma enzymes that are inactive as anaphylatoxins but retain
chemotactic activity
Opsonins - answer✔Molecules that "tag" microorganisms for destruction by cells of the
inflammatory system (primarily neutrophils and macrophages)
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