ATI RN
Chapter 20 The Lymphatic System and Immunity Sample Questions Questions
Question 1 of 5
Which cells in the thymus remove self-reactive T cells?
Correct Answer: B
Rationale: Dendritic cells remove self-reactive T cells; macrophages clean up, B cells are elsewhere, neutrophils are blood.
Question 2 of 5
Which cells release histamine during allergic reactions?
Correct Answer: B
Rationale: Mast cells release histamine in allergies; macrophages phagocytose, T cells coordinate, neutrophils fight infection.
Question 3 of 5
Which immunoglobulin is involved in early immune responses?
Correct Answer: D
Rationale: IgM is the first antibody produced; IgA is secretions, IgD is on B cells, IgE is allergies.
Question 4 of 5
Which immunoglobulin is on naïve B cells?
Correct Answer: B
Rationale: IgD is on naïve B cells with IgM; IgA is secretions, IgE is allergies, IgG is blood.
Question 5 of 5
Which cells are key to type III hypersensitivity?
Correct Answer: B
Rationale: B cells produce immune complexes for type III; T cells are type IV, mast cells are type I, neutrophils respond.