ATI RN
Questions on the Immune System Questions
Question 1 of 5
Which of the following antibody mechanisms is correctly described?
Correct Answer: D
Rationale: All mechanisms are correct: chemotaxis attracts phagocytes, opsonization aids phagocytosis, lysis (via complement) ruptures cells.
Question 2 of 5
The lymphatic vessels contain valves that help maintain the one-way flow of lymph. What is the purpose of these valves?
Correct Answer: A
Rationale: Valves ensure lymph flows toward the heart, preventing backflow.
Question 3 of 5
Which of the following immunity is obtained during a lifetime?
Correct Answer: A
Rationale: Acquired immunity develops over a lifetime, encompassing active and passive forms.
Question 4 of 5
In order to react to pathogens and remove worn-out red blood cells, the spleen has an abundance of:
Correct Answer: B
Rationale: Lymphocytes and macrophages in the spleen handle pathogens and cell removal.
Question 5 of 5
Identify the class of antibody found in saliva and breast milk.
Correct Answer: A
Rationale: IgA protects mucosal surfaces like saliva and milk.