Chapter 22: The lymphatic system and immunity
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)
