ATI RN
Lymphatic and Immune System Test Questions Questions
Question 1 of 5
The Fc region mediates all of the below EXCEPT binding to
Correct Answer: A
Rationale: The Fc region binds immune cells and lysosomes for effector functions, but antigen binding occurs at the variable region.
Question 2 of 5
Your body has millions of different antibodies for detecting millions of different antigens because
Correct Answer: B
Rationale: Somatic rearrangement and mutation generate diversity; not millions of genes or antigen shifting .
Question 3 of 5
MHC I molecules present
Correct Answer: A
Rationale: MHC I presents proteasome-derived peptides; phagolysosomes are MHC II.
Question 4 of 5
The thoracic lymphatic duct empties into the
Correct Answer: C
Rationale: The thoracic duct drains lymph into the left subclavian vein, returning it to the bloodstream.
Question 5 of 5
The process of coating a microbe with antibodies to make it more susceptible to phagocytosis is
Correct Answer: B
Rationale: Opsonization enhances phagocytosis by coating microbes with antibodies.