Nur 631 Final Study Guide Graded A+

How are target cells destroyed in a type II hypersensitivity reaction? a. Tissue damage from mast cell degranulation b. Antigen-antibody complexes deposited in vessel walls c. Cytotoxic T lymphocytes attack the cell directly. d. Natural killer cells {Ans: ANS: D The mechanism that results in a type II hypersensitivity reaction involves a subpopulation of cytotoxic cells that are not antigen specific (natural killer [NK] cells). Antibody on the target cell is recognized by Fc receptors on the NK cells, which releases toxic substances that destroy the target cell. Tissue damage from mast cell degranulation occurs in type I hypersensitivity reactions. Antigen-antibody complexes are active in type III hypersensitivity responses. Cytotoxic lymphocytes are involved in type IV hypersensitivity responses.}Which sexually transmitted infection frequently coexists with gonorrhea? Syphilis Herpes simplex virus Chlamydia Chancroid {Ans: ANS: C The coexistence of chlamydial infection with gonorrhea frequently occurs and has led to the recommendation that a person being treated for one of these STIs needs treatment for both.}How are secretion of antidiuretic hormone (ADH) and the perception of thirst stimulated? a. Decrease in serum sodium b. Increase in plasma osmolality c. Increase in glomerular filtration rate d. Decrease in osmoreceptor stimulation {Ans: