ATI RN
Lymphatic System Questions and Answers PDF Questions
Question 1 of 5
T helper cells:
Correct Answer: B
Rationale: Th cells (CD4+) regulate T and B cell responses and activate innate cells, not inducing cytotoxicity (CD8+ role).
Question 2 of 5
Fusion between a plasma cell and a tumor cell creates a
Correct Answer: C
Rationale: Hybridoma results from plasma/tumor fusion for monoclonal antibodies; not others (A-D).
Question 3 of 5
Antigen binding site on Immunoglobulin is located in:
Correct Answer: D
Rationale: Fab region binds antigens; Fc is effector, chains (A, C) contribute.
Question 4 of 5
Which of the following convey the longest lasting immunity to an infectious agent?
Correct Answer: C
Rationale: Active immunity can last a lifetime or for a period of weeks, months or years, depending on how long the antibodies persist, unlike passive immunity which is temporary.
Question 5 of 5
A polymorphonuclear neutrophil (PMN):
Correct Answer: C
Rationale: PMNs (neutrophils) contain granules with microbicidal agents for phagocytosis, unlike stem cells or mast cells.