*NURSING > A-Level Question Paper > NUR 631 FINAL EXAM (All)

NUR 631 FINAL EXAM

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TESTED AND CONFIRMED A+ ANSWERS In which structure does B lymphocytes mature and undergo changes that commit them to becoming B cells? Thymus gland Regional lymph nodes Bone marrow Spleen - ANSW... ER- ANS: C RATIONALE: B lymphocytes mature and become B cells in specialized (primary) lymphoid organs—the thymus gland for T cells and the bone marrow for B cells. Neither regional lymph nodes nor the spleen are involved in changing B lymphocytes into B cells. An individual's acquired immunity is dependent on the function of which cells? (Select all that apply.) T lymphocytes B lymphocytes Macrophages Opsonins Neutrophils - ANSWER- ANS: A, B, C RATIONALE: T lymphocytes, B lymphocytes, macrophages, and dendritic cells are involved in acquired immunity. Opsonins are molecules that tag microorganisms for destruction by cells of the inflammatory system; these cells are primarily neutrophils. Neutrophils are white blood cells. The common hay fever allergy is expressed through a reaction that is mediated by which class of immunoglobulins? IgE IgG IgM T cells - ANSWER- ANS: A RATIONALE: Type I reactions are mediated by antigen-specific IgE and the products of tissue mast cells. The most common allergies (e.g., pollen allergies) are type I reactions. In addition, most type I reactions occur against environmental antigens and are therefore allergic. Hay fever allergy is not mediated by IgG, IgM, or T cells. [Show More]

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