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ATI LPN · Anatomy and Physiology · Immune System Multiple Choice Questions and Answers PDF

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Which of the following is NOT a physical barrier that prevents infection?

A. intact skin

B. mucous membranes

C. hydrochloric acid of the stomach

D. ciliated cells

Correct Answer: hydrochloric acid of the stomach

Question 2 of 5

Which lymphoid tissue is found in the small intestine?

A. Tonsils

B. Peyer's patches

C. Appendix

D. Spleen

Correct Answer: Peyer's patches

Question 3 of 5

The antibody which is found in secretions is:

A. IgD

B. IgE

C. IgG

D. IgA

Correct Answer: IgA

Question 4 of 5

How are antibody producing cells stimulated?

A. Interacting with a virus short peptide

B. Interacting with a T helper cell

C. Interacting with a plasma cell

D. Interacting with a virus infected cell

Correct Answer: Interacting with a T helper cell

Question 5 of 5

A naÃƒÂ¯ve lymphocyte is:

A. A mature lymphocyte that is yet to encounter its specific antigen

B. A lymphocyte that can become activated once it encounters it specific antigen

C. Both options a & b are correct - mature B or T cell developed but has not encountered a specific antigen

D. None of the above options are correct

Correct Answer: Both options a & b are correct - mature B or T cell developed but has not encountered a specific antigen

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