ATI RN
Chapter 20 The Lymphatic System and Immunity Sample Questions Questions
Question 1 of 5
Many of the inflammatory mediators produced by tissue macrophages at sites of infection act on the endothelial cells lining the blood vessel walls. An exception to this is (are) the:
Correct Answer: D
Rationale: Bradykinin causes pain, not endothelial effects; cytokines (A, C), chemokines , and TNF target endothelium.
Question 2 of 5
Peripheral nervous system (PNS)
Correct Answer: D
Rationale: The PNS is outside the CNS (brain and spinal cord) and includes nerves and ganglia, making A and B correct.
Question 3 of 5
Which of the following statements about the humoral immune response is true?
Correct Answer: B
Rationale: Humoral immunity, via B cells and antibodies, targets pathogens in fluids (e.g., blood, lymph), not T cell activation, cancer, or macrophage antibody production.
Question 4 of 5
genes are responsible for coding for self-proteins.
Correct Answer: B
Rationale: MHC (Major Histocompatibility Complex) genes encode self-proteins for immune recognition, unlike STR, RFLP, or PCR (genetic tools).
Question 5 of 5
Which of the options below completes the following statement: Intracellular expression by innate immune cells is characteristic of.
Correct Answer: D
Rationale: TLR3, TLR7, and TLR9 are intracellular (endosomal), detecting nucleic acids, unlike TLR4, TLR5, etc., which are surface-bound.