ATI RN
Lymphatic System Review Questions Questions
Question 1 of 5
During negative selection, a strong interaction between an immature T cell receptor and self-peptide:
Correct Answer: D
Rationale: Strong binding triggers apoptosis to eliminate autoreactive T cells, not rescue or migration.
Question 2 of 5
Which of the following bind to mast cells and cross-link, resulting in degranulation and release of histamine?
Correct Answer: C
Rationale: IgE binds mast cells for histamine release; IgM , IgA , IgG , and interleukins don't.
Question 3 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 4 of 5
In an antigen haptens are:
Correct Answer: B
Rationale: Haptens are non-immunogenic alone, needing carriers; not inherently immunogenic .
Question 5 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.