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Lymphatic System and Immunity (Organizations (3 classes of circulatingā¦
Lymphatic System and Immunity
NON specific
defenses deny the entry or limit spread within the body.
skin
physical Barriers
Phagocytes
first line of cell defense
Interferons
small proteins
inflammation
tissue response to injury
perform temporary repair
slow spread of pathogens
immunity
innate
present at birth
Acquired immunity
arises by active or passive means
active immunity
after an exposure to an antigen
Passive
produced by the transfer of antigens to an individual from some other source
like a mother passing it through milk
Organizations
1
vessels (lymphatics)
begins in peripheral tissues and
ends at connections to the venous system
2
Fluid
called lymph
flows through the lymphatic vessels
3
Lymphocytes
specialized cells thay perform an array pf specific functions in defending the body
4
Lymphoid tissue and organs
loose connective tissue and lymphocytes in structures called lymphoid nodules (tonsils )
3 classes of circulating lymphocytes
T cells
80% of circulating lymphocytes
are T ( thymus - dependent ) cells
Cytotoxic T cells directly attack foreign cells or cells infected
*
activated from exposure
specific cells
B cells
chemical reaction
divide into plasma
memory cells
NK cells
non specific
Lymphoid Nodules
Lymp nodes
Stimulate T,B,NK cells
Protect your body from things you put in it
the thymus
site of T cells production
The spleen
Initiates B cell and T Cell response to antigens in circulating blood
antibodies
Classes
1 - igG
2 - IgM
3 - IgA
4 - IgE
5 - IgD
Neutralization
Aggulatination and precipitation
activation of complement
attaction of phagocytes
Enhancement of phagocytes
stimulation of inflammation
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