Part of body that filters and traps foreign particles and store B & T cells
Lymph Nodes
Stores blood cells and removes antibody coated cells
Spleen
traps bacteria and antigens
Adenoids (Tonsils)
Stem cells make blood cells; place were B cells mature
Bone Marrow
Produces and "educates" T cells
Thymus
Type of immune system that is "born with ability," treats all pathogens the same, and is nonspecific?
non specific innate immunity
List the 3 parts of the non specific first line of defense
skin
cilia
mucus
flat with tight junctions acts as protective barrier
skin
line respiratory tract to sweep out invaders
cilia
traps invaders by being sticky, made out of lysosomes
mucus
What is the pH of sweat glands?
3-5 acidity. antibacterial
What is the purpose of hydrochloric acid in the stomach?
to kill most germs in food
enzyme in saliva/tears that digests bacterial cell walls
lysozyme
What does the secondary internal defense of the nonspecific immune system consist of?
Leukocytes (Phagocytic cells)
WBC's that engulf and digest invading bacteria
macrophages
Response that increases blood flow to area to bring more immune cels in response to chemicals in damaged area
Inflammatory response (heat, swollen, fever, red, pain)
Dialates blood vessels making them more leaky. bring more blood to infected area and causes plasma to leak into tissue
Histamine
Chemical signal that calls up macrophages
Chemokines
Immunity that gains its ability over time
Specific acquired immunity
What cells are associated with humoral immune response
B cells
Response where B cells make antibodies to weaken pathogens and mark them to be killed
Humoral immune response (plasma cells)
What cells are associated with the cell mediated immune response
T cells
What response is important in bacterial infections
Humoral immune response
What response is important in viruses, cancer, and transplants
Cell meditated immune response
cells that recognize protein antigens on surfaces of virus infected cells and release chemicals to destroy them
Killer T cells (Cytotoxic)
chemical released by killer t cells that makes holes in infected cells; water rushes in and cells burst
Perforins
Cells that activate B cells and Killer T cells
Helper T cells
What releases antibodies
Plasma made by B cells
The idea that the body only makes B cells with specific antibodies at the time the body needs it specifically
clonal selection
What activates helper t cells
macrophages
Immunity that makes its own antibodies and is longer lasting
Active Immunity
Give an example of active immunity
when body is exposed to pathogens naturally
Give an example of Passive immunity
mother passes antibodies to fetus or thru breast milk
immunity where antibodies come from other sources and don't last forever
passive immunity
what type of immunity
snake bite produces immune response or shock
passive
what type of immunity
vaccinations
active