IMMUNE SYSTEM Flashcards
Is the ability to DESTROY PATHOGENS or other foreign material & to prevent further cases of certain infectious diseases
IMMUNITY
non-specific responses
INNATE/NATURAL IMMUNITY
specific responses
ADAPTIVE/ACQUIRED IMMUNITY
LINE:
skin
1st line
LINE:
mucous membranes & secretion
1st line
LINE:
normal flora
1st line
LINE:
innate immune cells
2nd line
LINE:
inflammation
2nd line
LINE:
complement
2nd line
LINE:
antimicrobial substances
2nd line
LINE:
B cells (produce antibodies)
3rd line
LINE:
T cells
- helper T cells
- killer T cells
3rd line
cells that produce antibodies
B cells
FIRST LINE of defense
MECHANICAL BARRIER
wash away pathogens
tears, saliva, urine
INGEST and DESTROY foreign substances.
PHAGOCYTIC CELLS
samples of phagocytic cells
neutrophils & macrophages
destroy IRREVERSIBLY STRESSED and ABNORMAL CELLS such as virus-infected and tumor cells
NATURAL KILLER CELLS
Dendritic cells are also called as
INTERDIGITATING DENDRITIC CELLS
the MOST IMPORTANT ANTIGEN-PRESENTING CELLS for initiating T cells responses against PROTEIN ANTIGENS.
DENDRITIC CELLS
dendritic cells initiates T cells responses against __________.
PROTEIN ANTIGENS
- Increase metabolic rates
- inhibits microbial multiplication
- inactivates enzymes
FEVER
Are protein produced by CELLS INFECTED WITH VIRUSES & by T cells
CHEMICAL MEDIATORS
chemical mediators are produced by
infected cells & T cells
TYPES OF INTERFERONS
Gamma
Alpha
Beta
infected by virus; makes interferon; is killed by virus
HOST CELL 1
entered by interferon from ell 1; interferon induces changes that protect it
HOST CELL 2
a group of MORE THAN 20 PLASMA proteins that circulate in the blood until activated
COMPLEMENT
they are involved in the LYSIS of cellular antigens & labeling of non-cellular antigens
COMPLEMENT
It depends on the BINDING of ANTIBODIES
CLASSICAL PATHWAY
it is TRIGGERED by the INTERACTION of SEVERAL PROTEIN FACTORS
ALTERNATIVE PATHWAY
enhancement of phagocytosis by coating with C3b
OPSONIZATION
increase of BLOOD VESSEL PERMEABILITY and chemotactic attraction of phagocytes
INFLAMMATION
LOSS of CCELLULAR CONTENTS through transmembrane channel formed by membrane attack complex C5-C9
CYTOLYSIS
It is also known as Specific Immunity or Acquired Immunity
ADAPTIVE IMMUNITY
2 TYPES OF ADAPTIVE IMMUNITY
HUMORAL IMMUNITY
CELLULAR IMMUNITY
humoral immunity is provided by ______
B LYMPHOCYTES
- can recognize protein, polysaccharide, phospholipid, and nucleic acid antigens
- can act AGAINST SOLUBLE or FREE ANTIGENS
- provides IMMUNITY to EXTRACELLULAR BACTERIA, viruses, & toxins
- causes type I, II, & III hypersensitivity
HUMORAL IMMUNITY
cell mediated immunity is provided by _________
T LYMPHOCYTES
- can recognize ONLY PROTEIN ANTIGENS
- recognizes antigens presented by APCs with class I or class II MHC molecule
- provides immunity to INTRACELLULAR bacteria, viruses, FUNGI & PROTOZOA
- causes type IV hypersensitivity; causes acute graft injection
CELL MEDIATED IMMUNITY
humoral immunity causes what types of hypersensitivity
I, II, & III
cell mediated immunity causes _____
type IV hypersensitivity & acute graft rejection
- This process involved BODY FLUIDS
- It involves B lymphocytes which produce antibodies
HUMORAL IMMUNITY
It is being produced by PLASMA CELLS. Are proteins produced in RESPONSE TO ANTIGEN. Make up a large portion of the plasma proteins, that include alpha, beta, and gamma globulins portions.
ANTIBODIES
antibodies are also called
GAMMA GLOBULINS
(Ig) IMMUNOGLOBULINS
antibodies are being produced by
PLASMA CELLS
Attaches to multiple cells making a CLUMP -blood typing.
AGGLUTINATION
CANDY COATING of bacteria for phagocytosis
OPSONIZATION
antibodies BLOCK the activity of a pathogen
NEUTRALIZATION
multiple pathogens are AGGREATED by antibody molecules
AGGLUTINATION