Chapter 22: The lymphatic system and immunity

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The primary response will peak how may days after an exposure?

10-17 days

Natural exposure to an infectious agent leads to.....

Active immunity

Which of the following induces the production of a specific antibody?

Antigen

Which class of cells includes macrophages, B cells and dendritic cells?

Antigen presenting cells

Which of the following is an incorrect matching of immune system cells and their functions? A: macrophage-process and presentation of foreign antigens to T cells B: dendritic cell-process and presents antigens to T and B cells C: B cells-process and presents antigen to helper T cells D: plasma cell- produces and secretes antibodies E: All of these are correct

C: B cells- process and presents antigen to helper T cells

Which class of antibodies is mainly found in sweat, tears, breast milk, and GI secretions?

IgA

Which cells are most variable in the immune system?

Lymphocyte

To become activated, _______ requires being bound to a foreign antigen AND simultaneous costimulation?

T Cell

Which cell is considered to be the most important cell in the immune system?

T helper Cells

An acute allergic response can lead to...

anaphylactic shock

Which type of adaptive immunity will result from intravenous injection of immunoglobulins?

artificially acquired passive immunity

Which anti-microbial substances promote cytolysis, phagocytosis, and inflammation?

complement proteins

Which cells of the immune system are the primary targets for the HIV virus?

helper T cells

When B and T cells are fully developed and mature, they are described as being ...

immunocompetent

The inability of the immune system to protect the body from a pathogen causes....

immunodeficiency diseases

What is an effect of stress on the immune system?

inhibition of the immune system

Which anti-microbial substances reduce viral replication ( in uninfected cells)

interferons

What is the major difference between lymph and interstitial fluid?

location

The skeletal muscle and respiratory pumps are used in the...

lymphatic, immune, and cardiovascular systems

Which provides non-specific cellular disease resistance mechanism?

macrophages

What is NOT a function of the lympatic and immune system?

maintaining water homeostasis in the body

Which cells increase the permeability of blood vessels by releasing histamine?

mast cells

Whcih is NOT a sign of inflammation?

mucus production

Which cells are part of the body's second line of defense?

natural killer cells

Which type of adaptive immunity will result from a mother-to-baby IgA transfer via breast feeding?

naturally acquired passive immunity

Which type of immunity defends against any type of invader?

nonspecific

Which action makes microbes more susceptible to phagocytosis?

opsonization

Which is a function of the spleen?

removes worn out blood cells

What is not considered an organ of the immune system?

the pancreas

Which organ produces a hormone that promotes maturation of T cells?

thymus

Natural passive immunity is associated with...

transfer of IgA from mother to fetus

Which type of allergic reaction is the most common type?

type 1 (anaphylactic)


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