Question 161 / 1 ptsWhich information is correct regarding the secondary immune response?Memory cells have to develop.A latent period or lag phase occurs.Correct!IgG is significantly increased.IgM is the primary immunoglobulin.IgM is produced in similar quantities to the primary response, but IgG is produced in considerably greater numbers A latent period or lag phase occurs in a primary immune response to allow for B cell differentiation. IgG is the primary immunoglobulin in a secondary immune response; IgM is primary for primary immune response. Memory cells develop in primary immune response.Question 17
1 / 1 ptsA person who is HIV positive was recently hospitalized with pneumonia caused by Pneumocystis jiroveci. The NP understands that this development indicates the personCorrect!has progressed from HIV to AIDS.is serologically positive for asymptomatic HIV disease.has adequate amounts of Th cells.is in the early stages of HIV disease.The presence of atypical or opportunistic infections is diagnostic for progression of HIV disease to AIDS. With an opportunistic disease the Th cells are greatly diminished. Although is serologically positive, the person is not asymptomatic and is now in AIDS. Individuals are relatively asymptomatic during the early stages of HIV disease; this person is in the late stage.Question 181 / 1 ptsWhich definition is true?Immunity means an altered immunologic response.Autoimmunity means the normal response to foreign antigensCorrect!Allergy means the deleterious effects of hypersensitivity to environmental antigens.
Hypersensitivity means the protective response to an antigen.Immunity is an organism’s ability to resist disease. Hypersensitivity is an altered immunologic response to an antigen that results in disease or damage to the host. Autoimmunity is a disturbance in the immunologic tolerance of self-antigens.Question 191 / 1 ptsWhich statement is trueregarding a type IV allergic reaction?Is mediated by antibody productionCorrect!Can be transferred by cellsIs immediate in its actionIs infiltrated with B cellsType IV hypersensitivity reactions can be transferred by cells but not by serum. Their actions are delayed because their onset takes from 24 to 72 hours. The site is infiltrated with T lymphocytes and macrophages. A clear hard center surrounds the erythema (redness).Question 201 / 1 ptsFollowing a spider bite she received while camping, a 20-year-old female presented to the emergency department with rash, edema, and fever and was subsequently diagnosed with serum sickness. Which of the following statements best conveys the physiological rationale for the broad systemic effects of this event?Correct!
Antigen–antibody complexes have been deposited in a variety of locations throughout the body.