Final Exam Quiz 5 Flashcards
which is not a component of innate immunity?
antibody
what is apart of the innate immunity?
fever, inflammation and skin
the simulation of b cells to divide and mature is provided by
T helper cells
Apoptosis is
cell suicide and is induced in target cells by effector T cytotoxic cells
MHC II are usually found on
B cells
why would a person who has their tonsils out be more susceptible to certain types of infections of the throat and respiratory tract?
because the tonsils are secondary lymphoid organs
how is a T cell receptor different from a B cell receptor?
t cell receptors must have antigen broken down inside a cell and presented to them by a MHC molecule
the complex resulting from complement activity that leads to cell lysis is the
membrane attack complex
pyrogens are
fever inducing substances
smoking impairs the ciliated cells of the respiratory tract while analgesic drugs can impair peristalsis. why are these two things able to cause infection
because those are two processes that help propel pathogens out of this area and serve as the physical barrier system and they have more time to adhere and colonize in side the body
how to cytokines function?
they are secreted by one cell type. they then bind to a receptor on target cell causing a signal within that cell that turns on or off genetic genes to achieve response
which class of antibody can cross the placenta
IgG
Toll like receptors bind molecules on pathogens. why is this helpful to the immune response?
it provides a general response to broad categories of molecules/cells that should not be in our system, as we don’t have these molecules on our own cells
attraction of leukocytes to the area of inflammation is referred to as
chemotaxis
which class has the longest half life
IgA
