ATI RN
Lymphatic System Review Questions Questions
Question 1 of 5
A proposed mechanism of suppression by which T-reg may cause T cell metabolic disruption is:
Correct Answer: D
Rationale: Tregs suppress via IL-2 deprivation (CD25), LAG3-MHCII inhibition, and granzyme-induced apoptosis.
Question 2 of 5
Cell-mediated immunity is carried out by_____________ while humoral immunity is mainly carried out by________
Correct Answer: C
Rationale: T cells drive cell-mediated, B cells humoral immunity; not reversed or others (B, D).
Question 3 of 5
In an antigen haptens are:
Correct Answer: B
Rationale: Haptens are non-immunogenic alone, needing carriers; not inherently immunogenic .
Question 4 of 5
B and T cells are produced by stem cells that are formed in:
Correct Answer: A
Rationale: The early development of stem cell takes place in primitive tissue, late development in fetal liver and final development in bone marrow, making bone marrow the primary site.
Question 5 of 5
Neutrophil defensins are:
Correct Answer: D
Rationale: Defensins are peptide antibiotics in neutrophil granules, killing microbes directly, not oxygen-dependent enzymes.