ATI RN
Chapter 15 The Lymphatic System and Immunity Review Questions Questions
Question 1 of 5
Which lymphatic organ produces hormones known as thymosins, important for the development of T lymphocytes (T cells)?
Correct Answer: C
Rationale: The thymus produces thymosins for T cell development.
Question 2 of 5
Identify the nonspecific defense mechanism that amplifies the inflammatory response and increases the likelihood of phagocytosis by binding to the surface of pathogens.
Correct Answer: B
Rationale: Complement proteins enhance inflammation and phagocytosis.
Question 3 of 5
HIV, the virus that causes AIDS, infects:
Correct Answer: C
Rationale: HIV targets CD4+ helper T cells, weakening immunity.
Question 4 of 5
Which lymphoid tissues trap and remove bacteria entering the throat:
Correct Answer: C
Rationale: Tonsils trap throat bacteria; axillary and cervical nodes drain other areas, Peyer's patches are intestinal, and thymus matures T cells.
Question 5 of 5
Central tolerance
Correct Answer: B
Rationale: Central tolerance induces B cell apoptosis in bone marrow; T cells exist but are deleted , B cells aren't in thymus , and anergy is peripheral .