Cortez, Janessa: Immune system
immune defenses
adaptive defense system
innate defense system
pathocytes they eat forign invadors
NK cells-can kill cancer and virus infected cells before adaptive immune system in activation
first and second linesof defense (skin, stomach acid, tears mucosae
it is systemic, not restricted to initial site
inhibit spread of invadors and inflammation is the most important mechanism
third line of defense attacks particular foreign substances
recognizes and targets specific antigens
it has memory, they get together and have a stronger attack to antigens
second lone is antimicrobial proteins
anatomy of the lymphatic system
spleen
thymus gland
tonsils
bone marrow
located in the back of mouth/throat
fist size located in the upper left side of abdomen
found behind the stomach
where b cell lymphocytes of the immune system to mature
it produces lymphocytes and antibodies which protect inhaled swalloed foreign bodies
old damaged red blood cells and filters blood out to remove microbes
secretes hormones and is crucial in the production
cellular response
cytotoxic cells defend against infections like cancer, or transplanted cells
t cells are involved in the cell-mediated
b cells and T cells cant be binded to free antigems
lymphocytes that mature in the thymus
t cells recognize and binds to the infected or cancerous cells
clones are formed of the different of T cells
helper t cells alerts and recruits the rest of the immune system
killer T cells are specialized in attacking and killing infected cells by releasing toxic
suprresor T cells release chemical suprresor factor a\to supress the activity
memory t cells provide long term immunaity
also become memory t cells
made in thymus, mature in bone marrow
humoral response
lymphocytes are designed to tell a specific antigen
b cells with specific receotoea bind to a specifc antigen
B and T cells have receptor proteins to bind to antigens
binding event activates lymphocytes
lymphocytes mature in the bone marrow
cloning of b cells is the primary
they defend against infection in body fluids
b cells become plasma cells which produce antibodies
known as antibody mediated immunity
called b cells and are involved
antibody travels throughblood, lympu and mucus destroy pathogen
b cells become long-lived memory cells
destroys pathogens before symptoms start to show up
immune system
adaptive defense system
acid of skin and enzymes and mucin sticky and mucusb
third line of defense attacks particular foriegn substances
natural killer cells can kill cancer and virus infected cells
second line is antimicrobiall proteins and other cells
first line of defense is the external body membrans includes skin and mucosae
memory cells keep tracl of each virus
phagocytes are white blood cells that eat foreign invadors
lymphatic system
production od immune cells like lymphocytes, monocytes and antibodys producing cells of plasma
returns excess fluid and proteins from the tissue that cannot be returned
absorption of fatty acids and subsequent transport of fat
fluid balance
absorption
antigens and antibodies
substances that can mobilize adapative defense
contain derminations can be self antigen
prevent antigens deom binding to receptors on tissue cells
activate mechanisms that destroy virus
most large complex molecules found in the body
can be a complete antigen or hapten
go after extracellular pathogens, they do not invade solid tissue
disorders of the immune system
antigen causes allergic reaction
body is overreacting to forign antigens that are not dangerous
production of autoantibodies
sensitized T cells that destroy body tissues
results when immune system looses abilty to distinguish
immediate hypersensitivity
autoimmunity
qutoimmune disease