ATI RN
Lymphatic System Review Questions Questions
Question 1 of 5
What are the three types of molecules necessary for neutrophils to arrive at the site of inflammation?
Correct Answer: A
Rationale: Selectins (SEL), ICAMs, and sialyl-Lewis X (SLIGs) mediate neutrophil adhesion and migration ; others are signals, not adhesion molecules.
Question 2 of 5
What is the intestinal microbiota?
Correct Answer: C
Rationale: Intestinal microbiota are bacteria ; not viruses , fungi , or parasites .
Question 3 of 5
Where would Peyer's patches be found?
Correct Answer: B
Rationale: Peyer's patches are in the small intestine , part of gut-associated lymphoid tissue (GALT).
Question 4 of 5
One surprising aspect of the immune system is that individuals make responses to human tissues from a different individual, causing serious problems for organ and tissue transplantation. The basis for this immune response is:
Correct Answer: A
Rationale: MHC polymorphism drives transplant rejection; microbes , blood groups , or APCs contribute less directly.
Question 5 of 5
NK cells express receptors from several families, each of which has multiple members. Some of these receptors are activating and others are inhibitory, and NK cell activation is dependent on the balance of signaling overall. The individual NK cells in an individual:
Correct Answer: C
Rationale: NK cells express a subset of receptors for balanced signaling; not always activating , not just cytotoxic , and are ILCs .