ATI RN
Chapter 20 The Lymphatic System and Immunity Sample Questions Questions
Question 1 of 5
Which lymphoid organ shrinks significantly after puberty?
Correct Answer: B
Rationale: The thymus shrinks post-puberty; spleen , lymph nodes , and tonsils maintain size.
Question 2 of 5
What is the role of the spleen's red pulp macrophages?
Correct Answer: C
Rationale: Red pulp macrophages remove old RBCs; antibodies are B cells, lymph is nodes, lymphocytes are white pulp.
Question 3 of 5
Which cells in the thymus remove self-reactive T cells?
Correct Answer: B
Rationale: Dendritic cells remove self-reactive T cells; macrophages clean up, B cells are elsewhere, neutrophils are blood.
Question 4 of 5
The lymphatic system's role in fluid balance prevents:
Correct Answer: A
Rationale: It prevents edema by removing excess fluid; hypertension is circulatory, anemia is RBCs, hypoglycemia is glucose.
Question 5 of 5
Which cells release histamine during allergic reactions?
Correct Answer: B
Rationale: Mast cells release histamine in allergies; macrophages phagocytose, T cells coordinate, neutrophils fight infection.