ATI RN
Good Questions About the Immune System Questions
Question 1 of 5
Polymorphonuclear neutrophils attack bacteria:
Correct Answer: A
Rationale: Neutrophils primarily phagocytose bacteria, using both oxygen-dependent and independent mechanisms.
Question 2 of 5
Hypersensitivity reactions:
Correct Answer: D
Rationale: All (A, B, C) are true: IgE (Type I), complexes (Type III), and complement/IgG (Type II); thus, D.
Question 3 of 5
Which of the following statements is true about TNF alpha?
Correct Answer: D
Rationale: TNF-α upregulates adhesion molecules; it increases permeability , not decreases.
Question 4 of 5
Which of the following is not a function of lymph nodes?
Correct Answer: B
Rationale: Lymph nodes produce lymphocytes and filter debris/particles, but plasma proteins are made by the liver.
Question 5 of 5
An antigen is a foreign substance that causes ___________, whereas an allergen is a foreign substance that causes _____________.
Correct Answer: D
Rationale: Antigens trigger antibody production; allergens cause hypersensitivity (e.g., histamine release).