ch 21 quiz Flashcards
which of the following properties distinguishes adaptive immunity from innate immunity
immunity is directed against a particular pathogen
the body reacts quickly to a pathogen to which it was previously exposed
adaptive immunity utilizes broad range barriers like skin and mucous membranes
when re-exposed to a pathogen there is usually no noticeable signs or symptoms of disease from that pathogen
adaptive immunity utilizes immune surveillance
immunity is directed against a particular pathogen
the body reacts quickly to a pathogen to which it was previously exposed
when re-exposed to a pathogen there is usually no noticeable signs or symptoms of disease from that pathogen
which of the following is a function of the lymphoid system
to reabsorb fluid from the interstitial spaces back to into the blood
to remove foreign matter from interstitial fluid before returning it to the blood
to secrete lipid-soluble hormones
to absorb dietary lipids
to absorb dietary proteins
to reabsorb fluid from the interstitial spaces back to into the blood
to remove foreign matter from interstitial fluid before returning it to the blood
absorb dietary lipids
adaptive immunity
histamine
defensins
lysozyme
pyrogens
hyaluronic acid
hydrogen peroxide
tumor necrosis factor
heparin
tumor necrosis factor
innate immunity
histamine
defensins
lysozyme
pyrogens
hyaluronic acid
hydrogen peroxide
tumor necrosis factor
heparin
histamine
defensins
lysozyme
pyrogens
hyaluronic acid
hydrogen peroxide
heparin
cytotoxic T-cells
promote the action of cytotoxic t cells
limit the immune reponse
descended from cytotoxic T cells
inhibit multiplication and cytokine secretion by other T cells
thought to be important in preventing autoimmune diseases
effectors of cellular immunity
carry out the attacks on foreign cells
only T cells that play a role in nonspecific defense
effectors of cellular immunity
carry out the attacks on foreign cells
memory T cells
descended from cytotoxic T cells
helper T cells
only T cells that play a role in nonspecific defenses
promote the action of cytotoxic t cells
regulatory t cells
limit the immune reponse
inhibit the multiplication and cytokine secretion by other t cells
thought to be important in preventing autoimmune diseases
complete each sentence
An _________ encounters, engulfs, and processes an antigen
The antigen presenting cell then migrates to the nearest ________
There it displays the antigen to ________
If the antigens are viral proteins or abnormal antigens the T cells initiate the ____________
Infected or malignant cells are then _________ before they can do further harm to the body
antigen-presenting cell
lymph node
T lymphocytes
immune response
destroyed
which cell phagocytizes an antigen and displays fragments of it on its surface
antigen-presenting cell
naive T lymphocytes
effectors T lymphocyte
anergic cell
reticular cell
antigen-presenting cell
which is true regarding anitgens
they have molecular weight of around 1000
they have one antigenic determinant (epitope)
they are considered normal by the immune system
they can contain many different antigenic determinants (epitopes)
they are usually made of lipids
they contain many different antigenic determinants (epitomes)
which is true about bacterial cells
they have one identifiable antigen that binds to antibodies
they have 2 epitopes per cell
they have many different epitopes which each bind to specific antibodies
they have many different epitopes which all bind to the same antibody
they are not antigenic
they have many different epitopes which can bind to specific antibodies
an individual antibody is made against
a whole bacterial cell
one epitope of an antigen
one antigen on the cell
all of the combined antigenic determinants on a cell
the cell’s DNA
one epitope of an antigen
each antigen has one epitome
true
false
true
many different antibodies can be made against a single antigen
true
false
true
which of the following is true when interferon attached to a cell
the virus can not enter the cell
the virus can enter the cell but cannot replicate
the virus can replicate within a cell but can not be released
viral replication takes place as usual
the virus is brought into the cell where it is digested by perioxisomes
the virus can enter the cell but cannot replicate
when interferon from 1 cell attaches to a second cell
the recipient cell makes enzymes that prevent metabolism
the second cell now makes interferon and saves itself
the recipient cell makes enzymes that degrade mRNA and prevent viral protein synthesis
the recipient cell secretes enzymes that destroy the donor cell
the receipient cell secretes enzymes that destroy the donor cell
which of the following is true regarding interferon
interferon is produced as a specific response to a specific virus
interferon is produced by one cell and used to warn nearby cells of the same type
interferon is able to save the cell that makes it
interferon induces production of mRNA in the recipient cell
interferon kills all bacteria nonspecifically
interferon is produced by one cell and used to warn nearby cells of the same type
people with type AB blood have
both type A and type B antigens on their RBCs
both anti-A and anti-B antibodies in their serum
the A antigen on their RBCs and anti-B antibodies in their serum
the first and second choices are both correct answers
none of the choices are correct answers
A and B antigens on their RBCs
when type B blood is given to a person with type A blood
the B antigen from the donor reacts with anti-B antibody in the recipient
the B antigen from the recipient reacts with anti-B antibody in the donor
the B anitgens from the donor reacts with anti-A antibody in the recipient
the A antigen from the donor reacts with anti-A antibody in the recipient
no reaction occurs
no reaction occurs
which type of blood may a person with type AB blood receives
type A blood
type B blood
type AB blood
type O blood
all choices are correct
all choices are correct
which viral receptor is involved in HIV attachment to the host cell
Gp41
Gp20
P24
P17
all are correct
Gp120
in order for HIV to attach the host cell must have a
CD4 antigen receptor and a cell specific co-receptor
gp120 receptor
CD4 receptor and a non-specific universal receptor
MHC II receptor and a nonspecific universal receptor
a CD4 antigen receptor and a cell specific co-receptor
which of the following is true regarding protease enzyme
protease enzyme makes DNA from single-stranded RNA
protease enzyme intergrates viral DNA into a host genome
protease enzyme cleaves poly-protein into individual functional viral proteins
protease enzyme helps the virus attach to the host cell
protease enzyme cleaves host proteins into individual amino acids
protease enzyme cleaves poly-protein into individual amino acids
which are antigen-presenting cells
macrophages
B cells
cytotoxic T cells
all of these choices are correct
only the first and second choices are correct
only the 1st and 2nd choices are correct
helper T cells interact with target cells by recognizing
antigens only
MHC proteins only
antigen-MHC protein complexes
either antigens or MHC proteins
neither antigens nor MHC proteins
antigen-MHC protein complexes
helper T cells secrete __________ to stimulate the proliferation of B cells
antigens
antibodies
cytokines
agglutinins
allergens
cytokines
arrange the following in the proper sequence in which they occur during the inflammatory response
- neutrophils roll along endothelium
- integrin activation
- margination
1, 2, 3
during the inflammatory response ________ degranulate and release________
endothelial cells; cytokine
endothelial cells; histamine
endothelial cells; chemotactine
mast cells; cytokine
mast cells; histamine
mast cells; histamine
which of the following describes the migration of neutrophils from blood vessels
degranulation
dilation
extravasation
neutrophilisation
none of these are correct
extravasation
which of the following are needed for antibody production to occur with T cell dependent antigens
antigen presenting cell
t helper cell
b cell
all of these choices are correct answers
only the second and third choices are correct answers
only 2nd and 3rd choices are correct
an antigen-presenting cells presents antigen to a t helper cell
inside a vesicle
on its surface on a class I MHC
on its surface on a class II MHC
on its surface attached to an antibody
on its CD8 receptor
on its surface on a class-II MHC
a t helper cell becomes activated by a
plasma cell
antigen presenting cell
b cell
memory cell
mast cell
antigen presenting cell
