Question 16 1 1 pts which information is correct

Question 16
1 / 1 pts
Which 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 pts
A person who is HIV positive was recently hospitalized with pneumonia caused
by Pneumocystis jiroveci . The NP understands that this development indicates the
person
Correct!
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 18
1 / 1 pts
Which definition is true ?
Immunity means an altered immunologic response.
Autoimmunity means the normal response to foreign antigens
Correct!
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 19
1 / 1 pts
Which statement is true regarding a type IV allergic reaction?
Is mediated by antibody production
Correct!
Can be transferred by cells
Is immediate in its action
Is infiltrated with B cells
Type 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 20
1 / 1 pts
Following 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.