ATI RN
Chapter 15 The Lymphatic System and Immunity Review Questions Questions
Question 1 of 5
Which lymphoid tissue is found in the nasopharynx?
Correct Answer: B
Rationale: Pharyngeal tonsils are in the nasopharynx; palatine , lingual , and Peyer's are elsewhere.
Question 2 of 5
What is the role of T-helper cells?
Correct Answer: C
Rationale: T-helper cells activate others; killing is cytotoxic T, antibodies are B cells, phagocytosis is macrophages.
Question 3 of 5
The complement system's alternative pathway is triggered by:
Correct Answer: B
Rationale: The alternative pathway is pathogen-triggered; antibodies are classical, cytokines signal, histamines inflame.
Question 4 of 5
What is the term for immune deficiency from genetics?
Correct Answer: D
Rationale: Immunodeficiency is genetic weakness; allergy and hypersensitivity are overreactions, autoimmunity is self-attack.
Question 5 of 5
With regard to the medullary sinuses of the lymph node: They drain into afferent vessels.
Correct Answer: B
Rationale: Medullary sinuses drain into efferent lymphatic vessels at the hilum, not afferent vessels which bring lymph in.