Clotting- the way the body
prevents blood loss when vessels are broken
The steps to clotting as are
follows!
1.
The damaged
cells release a protein called CLOTTING FACTORS!
These little guys are released into the
plasma and head over to the wound site.
2.
The clotting
factors activate the enzyme THROMBIN,
which
then turns the soluble plasma protein FIBRINOGEN into its insoluble fibrous
form FIBRIN!
3.
Fibrin then
comes and saves the day by binding together platelets and blood cells.
This
creates a plug called a clot
.
Outline the immune response to an
antigen
The antigen’s epitope is detected by a large
white blood cell called a macrophage
The
macrophage eats the antigen and digests it .
It
moved to the lymph nodes
The lymph nodes contain a wide variety
of B lymphocytes
Corresponding B or T Lymphnodes
are selected
Lymphnodes rapidly divide to form
a clone of Plasma cells and B memory cells
Discuss active vs. passive
immunity
Active Immunity- immunity that is
a result of the production of antibodies by the organism itself. This is done
after the body’s mechanism have been activated by an antigen
Passive immunity- immunity due to
the acquired antibodies from another organism in which active immunity has been
stimulated
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