ATI RN
Lymphatic System Exam Questions Questions
Question 1 of 5
Which of the following statements is correct?
Correct Answer: C
Rationale: T cells (CD4+) recognize MHCII-antigen complexes and help B cells, unlike antigenic shift (viral reassortment), immature DCs (antigen uptake), or soluble proteins.
Question 2 of 5
The biological action(s) of the cytokine IL-2 include
Correct Answer: D
Rationale: IL-2 promotes T cell expansion and NK cytotoxicity, but supports (not inhibits) Treg survival.
Question 3 of 5
Which immunoglobulin is the principal one found in secretions such as milk?
Correct Answer: A
Rationale: IgA dominates secretions like milk; IgD , IgE , and IgG are less prevalent there.
Question 4 of 5
The specificity of an antibody is due to
Correct Answer: D
Rationale: Variable regions determine specificity; valence is binding capacity, Fc is effector.
Question 5 of 5
Pasteur developed the vaccination for:
Correct Answer: D
Rationale: Pasteur developed vaccines for all : rabies, anthrax, and cholera.