ATI RN
Chapter 20 The Lymphatic System and Immunity Sample Questions Questions
Question 1 of 5
Describe the flow of lymph beginning with lymph formation.
Correct Answer: B
Rationale: Lymph forms from tissue fluid entering lymphatic capillaries, then flows through vessels, ducts, and into veins.
Question 2 of 5
What will stimulate active immunity?
Correct Answer: C
Rationale: Active immunity arises from pathogen infection or vaccination.
Question 3 of 5
Which lymphatic organ's major job is to destroy worn-out red blood cells and return some of the products to the liver:
Correct Answer: B
Rationale: Spleen destroys old RBCs and recycles products; tonsils protect the throat, thymus matures T cells, appendix and Peyer's are immune-related but not RBC-focused.
Question 4 of 5
Peripheral tolerance is maintained by all of the following mechanisms except
Correct Answer: B
Rationale: Thymus deletion is central, not peripheral; anergy , clonal deletion , and Tregs are peripheral.
Question 5 of 5
The class or subclass of an immunoglobulin is determined by the:
Correct Answer: A
Rationale: CH region determines Ig class; CL is light chain, VH and VL are variable.