ATI RN
Lymphatic System Test Questions Questions
Question 1 of 5
Central tolerance: (negative selection)
Correct Answer: D
Rationale: Central tolerance (thymus) removes self-reactive T cells, supplemented by peripheral tolerance, preventing autoimmunity.
Question 2 of 5
Theoretically, type_____________ ______ blood can be donated to all persons because it lacks_____________ ______
Correct Answer: A
Rationale: Type O lacks antigens, making it universal; AB has antigens, A and O misstate.
Question 3 of 5
The ability of the immune system to recognize self-antigens versus non-self antigen is an example of:
Correct Answer: B
Rationale: Self-tolerance distinguishes self from non-self; specific immunity is broader.
Question 4 of 5
The antibody that is first formed after infection is:
Correct Answer: B
Rationale: IgM is the first antibody in primary response; IgG follows.
Question 5 of 5
B cells mature in the while T cells mature in the
Correct Answer: C
Rationale: Differentiation of B Cell takes place in bone marrow and functional B cells are found in Gut associated Lymphoid tissue (GALT), while T cells mature in the thymus.