Ch. 7 Immunity Quizizz

Neutrophils:

• are phagocytic cells

• produce histamine

• produce antibodies

• are elevated during an allergic response

Which cells are required to process and present antigens from foreign material as the initial step in the immune response?

• T helper cells

• Macrophages

• Eosinophils

• Monocytes

Humoral immunity is mediated by

• natural killer cells

• T cells

• B cells

• neutrophils

A secondary immune response differs from the primary immune response in that:

• it is more rapid than the primary response and results in higher antibody levels

• it is slower than the primary response and doesn't change the antibody levels

• it occurs at the same time as the primary response but results in a decrease in antibodies

• it only occurs in hyperallergic reactions and results in a decrease of antibodies

Which type of immunity is provided by a vaccination?

• Active natural

• Active artificial

• Passive natural

• Passive artificial

When an allergen binds with IgE antibodies on mast cells, resulting in release of chemical mediators, this reaction is called:

• cytotoxic hypersensitivity

• immune complex hypersensitivity

• type I hypersensitivity

• type IV hypersensitivity

The role of memory cells is to:

• change into an antibody-secreting cell following activation

• immediately secrete antibodies following the first exposure to antigen

• recognize the antigen and stimulate the immune response

• bind complement to the antibody

Which statement applies to contact dermatitis?

• It occurs when IgE antibodies on the skin react with the causative substance

• It may result from ingested foods

• Urticaria (hives) gradually spread over the body

• A type IV reaction occurs in affected areas

Which of the following causes anaphylaxis?

• A severe, systemic allergic reaction

• Type III hypersensitivity

• Cell mediated hypersensitivity

• Immune complex deposits in many tissues

Following a positive HIV antibodies blood test and ELISA test, what is the test commonly used for confirmation?

• Agglutination

• Double immunodiffusion test

• Western blot test

• Sedimentation rate test