ATI RN
Questions on the Immune System Questions
Question 1 of 5
Which of the following is an immediate effect of histamine release?
Correct Answer: A
Rationale: Histamine causes vasodilation, increasing blood flow to the injury site, not blocking pollen responses, converting to histidine, or raising blood pressure.
Question 2 of 5
Which of the following statements is true for neutrophils?
Correct Answer: B
Rationale: Neutrophils are the most abundant WBCs in blood, excelling in phagocytosis, not antigen presentation (DCs) or viral cell killing (NK cells).
Question 3 of 5
Which of the statements below describe a similarity between T and B cell receptors?
Correct Answer: B
Rationale: Both TCRs and BCRs activate via antigen binding to variable regions, unlike binding sites (BCR: 2, TCR: 1), chains (TCR: αβ, BCR: heavy/light), or secretion (BCR only).
Question 4 of 5
The CD3 component of the TCR complex is involved in:
Correct Answer: B
Rationale: CD3 transduces signals via ITAM phosphorylation, not antigen recognition or initial APC interaction.
Question 5 of 5
Monoclonal antibodies are produced by
Correct Answer: A
Rationale: Hybridomas , fused plasma and myeloma cells, produce monoclonal antibodies; others (B, C, D) don't inherently do so.