ATI RN
Immune System Multiple Choice Questions and Answers Questions
Question 1 of 5
Regarding mast cells, which statement is false
Correct Answer: D
Rationale: Basophils are circulating, not tissue-high; morphine , IgE , and C5a are true.
Question 2 of 5
In order for a self-reactive T helper cell to respond to a self-peptide on MHC Class II, it must be activated and co-stimulated through:
Correct Answer: A
Rationale: B7-CD28 co-stimulates T cells; CD28 is on T cells, B7 on APCs, not reversed (B, D) or CD4 .
Question 3 of 5
What aids lymph flow toward the heart?
Correct Answer: A
Rationale: Skeletal muscle contraction milks lymph toward the heart; heart pumps blood, arterial pressure drives blood, and venous return is blood-specific.
Question 4 of 5
What is the primary source of lymph?
Correct Answer: B
Rationale: Interstitial fluid forms lymph; plasma contributes indirectly, digestive juices and sweat are unrelated.
Question 5 of 5
What is the term for swelling due to lymphatic obstruction?
Correct Answer: D
Rationale: Lymphedema is swelling from obstruction; lymphadenitis is node inflammation, lymphangitis is vessel, lymphoma is cancer.