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ATI LPN · Medical Surgical Nursing · Questions on the Immune System

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

What is the function of MHC I molecules?

A. Present exogenous proteins

B. Present proteins to Th cells

C. Present endogenous proteins to killer T cells

D. None of the above

Expert Explanatory Rationale

Correct Answer: Present endogenous proteins to killer T cells

Question 2 of 5

Natural killer (NK) cells do not:

A. Contain perforin

B. Contain serine proteases

C. Contain tumor necrosis factor (TNF)

D. Kill only by damaging the target cell outer membrane

Expert Explanatory Rationale

Correct Answer: Kill only by damaging the target cell outer membrane

Question 3 of 5

Which of the following antibody mechanisms is correctly described?

A. chemotaxis - activated enzymes attract neutrophils and macrophages into the region where there are antigens

B. opsonization - activated enzymes altering cell membranes so that they are more susceptible to phagocytosis

C. lysis - activated enzymes digest the membranes of foreign cells so that they rupture

D. all of the above

Expert Explanatory Rationale

Correct Answer: all of the above

Question 4 of 5

Total RBC count for Women is?

A. 4.4-6

B. 4.2-5

C. 4.0-5.0

D. 4.2-5.2

Expert Explanatory Rationale

Correct Answer: 4.0-5.0

Question 5 of 5

The nurse is assessing a client for signs and symptoms of systemic lupus erythematosus (SLE). Which of the following would be consistent with this disorder? (Select one that does not apply.)

A. Discoid rash on skin exposed to sunlight

B. Urinalysis positive for casts and protein

C. Painful, deformed small joints

D. Pain on inspiration

Expert Explanatory Rationale

Correct Answer: Painful, deformed small joints