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immune system body func
Terms in this set (21)
structure and function of our skin and mucous membranes
skin- prevents penetration againsr bact/virus
membrane-form protect bar:dig,resp,gegenit tract
function skin ,mucous membrane secretion
,ph skin, stop grow microbes+wash away microbes/kill microbes
the role of cilia in resp tract
keep airway clean of dust/mucous,dirt,entering nose.
What cause inflammation?
anything that injures cells,(release histamine,cause tissue to swell, fluid)
characteristics of inflammation
benefits of inflammation
-Prevents spread of damaging agents
-Disposes of cell debris and pathogens
-Alerts adaptive immune system
-Sets the stage for repair
a type of cell within the body capable of engulfing and absorbing bacteria and other small cells and particles. neutrophils,macrophages
What do Phacogytes do?
try to "eat" any foreign cells /cell debris
What causes fever?
Macrophages release pyrogens, which cause body temperature to increase.
the benefits of a mild to severe fever
fever helps produce more white blood cells (t and b) and kill pathogens?(virus, bact)
B and T cells
two types of lymphocytes, they kill pathogens(b cells) and make memory cells to prevent you from getting the same disease (t cells)
What are antigens? how can b/t cells recognise antigens,using receptors
foreign molecules that trigger the generation of antibodies. t cells attach themselves to a pathogen to label it for destruction, destroying itself and the pathogen
Where do T and B cells mature?
T cells: thymus
B cells: bone marrow
b cell activation and production of antibodies
The first antibodies made by a newly formed B cell are not secreted. ... When a naïve or memory B cell is activated by antigen (with the aid of a helper T cell), it proliferates and differentiates into an antibody-secreting effector cell.
Cytotoxic T cells activation and function
get activated when cell gets tagged as bad cells, then they get murdered by the killer t cells
helper t cells are important to confirm infection and help activate both both b cells and cytotoxic t cells
memory b and memory t cells ,
after ab ubfection most of the b cells and t cells involved in then fights die , but some remain in your blood stream as a memory cells react quickly to fight off infection it occors again
: a way to stimulate the immune system to produce memory cells to protect you from the real infection
a damaging immune response by the body to a substance, especially pollen, fur, a particular food, or dust, to which it has become hypersensitive.
a disease in which the immune system attacks the organism's own cells
when a persons immune system doesnt work properly , hiv infect and kills t cells