ATI RN
Lymphatic System and Immunity Test Questions Questions
Question 1 of 5
Acquired immunity is a result of previous exposure
Correct Answer: B
Rationale: Acquired immunity develops from prior exposure, such as through vaccination, which stimulates the immune system to remember pathogens.
Question 2 of 5
What type of immune response is always disadvantageous to a person?
Correct Answer: C
Rationale: Autoimmune responses harm self-tissues, unlike inflammatory, humoral, or complement responses, which are typically beneficial.
Question 3 of 5
Leukocyte secreted cytokines, which act on leukocytes, are known as.
Correct Answer: D
Rationale: Interleukins are cytokines acting between leukocytes, a broad term encompassing lymphokines (lymphocyte-derived) and others.
Question 4 of 5
Complete the following sentence. The antibody isotype which displays the highest avidity due to its pentameric form, and is capable of complement recruitment corresponds to.....
Correct Answer: D
Rationale: IgM's pentameric structure gives high avidity and activates complement efficiently.
Question 5 of 5
Which of the following cytokines are mainly secreted by CD4 T helper 2 cells
Correct Answer: C
Rationale: Th2 cells secrete IL-4, IL-5, and IL-13, promoting humoral immunity and allergies, unlike Th1 (IL-2, TNF) or Th17 (IL-17) profiles.