ATI RN
Immune System Questions and Answers Quizlet Questions
Question 1 of 5
Which of these is not a nonspecific defense against disease
Correct Answer: D
Rationale: Hair color and texture don't defend against disease; species resistance , phagocytosis , and interferon are nonspecific defenses.
Question 2 of 5
Most normal tissues contain resident macrophages, and connective tissue sites in the gastrointestinal tract and the lung contain large numbers of these cells. Yet the blood also contains a high number of circulating 'classical' monocytes that can differentiate into macrophages after entering tissues. These circulating monocytes function to:
Correct Answer: D
Rationale: Monocytes enter infected tissues to become macrophages ; blood phagocytosis , lining , or lymph node patrol are less primary.
Question 3 of 5
Antibody diversity is generated by multiple mechanisms, each of which contributes to the generation of antibodies with up to 10^11 different amino acid sequences in their antigen-binding sites. Several of these mechanisms involve changes in the DNA sequences encoding the antibody heavy and light chain proteins. One mechanism that does not rely on changes to the DNA within the immunoglobulin heavy and light chain gene loci is, instead, dependent on:
Correct Answer: A
Rationale: Heavy/light chain pairing is post-DNA; VDJ , κ/λ , and TdT alter DNA.
Question 4 of 5
A heart attack is
Correct Answer: D
Rationale: A heart attack (myocardial infarction) involves cardiac muscle damage due to a blocked coronary artery, not brain tissue death (which is a stroke).
Question 5 of 5
The transfer of antibodies in breast milk to an infant is an example of immunity.
Correct Answer: B
Rationale: Antibodies from breast milk provide passive immunity, transferred without the infant's immune system activation, unlike active or nonspecific immunity.