ATI RN
Pediatric Immunity NCLEX Questions Questions
Question 1 of 5
Expression of L-selectin (CD62L), the receptor that facilitates homing of peripheral lymph nodes, is ___ for memory T cells, ___ for naïve T cells, and ___ for effector T cells.
Correct Answer: B
Rationale: L-selectin is low on memory T cells, high on naïve T cells, and variable on effector T cells.
Question 2 of 5
Which complement pathway is activated by (and requires) antibodies, with IgM being particularly good at C1 binding?
Correct Answer: B
Rationale: The classical pathway requires antibodies, with IgM effectively binding C1.
Question 3 of 5
Follows concentration gradient of chemokines to the site of infection
Correct Answer: B
Rationale: Chemotaxis is the movement along chemokine gradients.
Question 4 of 5
Most cases of septic shock are caused by gram organisms with the acting as the endotoxin in the disease.
Correct Answer: B
Rationale: Gram-negative bacteria are the most common cause of septic shock, and their lipopolysaccharide (LPS) endotoxin triggers the inflammatory response.
Question 5 of 5
Natural killer (NK) cells are excellent killers of cells infected by some They also have an additional role of stimulating the immune response.
Correct Answer: B
Rationale: NK cells target virus-infected cells and stimulate the adaptive immune response via cytokine production.