ATI RN
Immune System NCLEX Questions Quizlet Questions
Question 1 of 5
Mature α:β T cells:
Correct Answer: D
Rationale: Mature αβ T cells express CD3, are single-positive (CD4 or CD8), and migrate peripherally.
Question 2 of 5
Which disease would be most similar to AIDS in its pathology?
Correct Answer: A
Rationale: SCID mimics AIDS with broad T/B cell loss; others (B, C, D) are narrower defects.
Question 3 of 5
Complement fixation is one of the most crucial host defenses against infections. The complement is activated by;
Correct Answer: C
Rationale: IgM and IgG activate complement; not IgM only or all classes .
Question 4 of 5
Which of these does NOT act as a protecting barrier for the body surface?
Correct Answer: C
Rationale: Salivary amylase digests, not protects; mucus , skin , and acid are barriers.
Question 5 of 5
The ability of the immune system to recognise self antigens versus non-self antigen is an example of:
Correct Answer: B
Rationale: Tolerance is the immune system's ability to distinguish self from non-self, preventing autoimmunity, unlike specific immunity (response type).