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82 Cards in this Set

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ability of individual to resist infe tion by nornally present body function

Natural innate immunity

what are the furst external defense

physical barrier. chemical barrier. normal flora. physiologic processes. and miscellanous

what are the physical barriers

unbroken skin


mucous membrane


nasal hair


vaginal acidity


cillia of respiratory tract

chemical barriers

mucus


sebum


sweat


cerumen acids


tears


saliva


lysozymes

sweat contains? its ph?

lactic acid. ph 5

competes with pathogens for nutrients

normal flora

physiologic processes

sneezing


coughing


vomiting


gag reflex


perspiration


shivering


crying


urination


defecation


clotting


yawinibg


burping

miscellanous

body temp


age


ph


hormones

second line of defense also known as

internal defense system

2nd line defense system is divided into

cellular and humoral

cellular components

phagocytes


basophil


eosinophil


mast cell


NKC


Antigen presenting cell


acute phase reactants

phagocytes

neutrophil and monocytes/macrophage

2 types

humoral components

cytokines


complement


interferon


inflammation


lysozymes

c2i2l

it is the engulfment and destruction of foreign cells or particulates by leukocytes macrophages and other cells

phagocytosis

consists of recognition and ingestion of larger particles also known as

phagosome

adherance of the recwptors on the endothelial cell walls of blood vessels and pentrates tissues through

diapedesis

cells are attracred to the site of inflammation by chemical substances

chemotaxis

steps of phagocytosis

chemotaxis


adherence


engulfment


phagosome formation


fusion


digestion

CAEPFD

via PRR PATHOGEN RECOGNITION RECEPTORS


uses pathogen associated molecular pattern on the microbe surface

direct interaction

attach to foreign substances and prepare it for phagocytosis

opsonins

para mas masarap nirready nito yung nonself. parang msg

pseudopodia surround the pathogen then fuse to for a vacuole PHAGOSOME. then converted into phagolysosome

ingestion

occurs inside the phagolysosome

digestion

produced in the digestion process that is toxic to pathogens

nitric oxide

NADPH OXIDASE forms o2 radicak which is toxic to the pathogens

oxygen-dependent mechanism

superoxide is converted into kore stable oxidative burst product which is

H202

involves DEFENSINS which are antibiotic like made by phagocytes


inbolves DIGESTIVE ENZYMES present in the phavolysosome

oxygen independent mechanism

lipopeptides. targets mycobacteria

TLR1

peptidoglycan, lipoproteins zymosan targets g- bacteria, mycobacteria and yeasts

TLR2

lipopolysaccharides, fusion proteins and mannan. targets g- bacteria rsv fungi

TLR 4

flagellin targets bacteria w flagellae

TLR5

lipopeptides lipoteichoic acid zymosan. targets mycobacteria g- bacteria and yeasts

TLR 6

TLR receptors found in endosomal compartments

TLR 3, 8, 7, 9, 10

TLR 3

double stranded RNA. targets rna viruses

sibgle stranded rna. targets rna virusea

TLR 7

single stranded rna. targetz rna viruses

TLR8

double stranded dna. targets dna viruses bacterial dna

TLR 9

unknown. targets unknwon

TLR 10

normal serum constituents that increase repidly because of infection injury or trauma

Acute phase reactants

functions of APR?

binds ro microorganisms promoting adherence


limuts destruction caused by the release of proteolytic enzymes from WBCs

examples of acute phase reactants

c-reactive protein


serum amyloid a


complement


alpha 1 antitrypsin


haptoglobin


fibrinogen


ceruloplasmin

CSCA1HFC

APR are produced by

hepatocytes

aprs are produced with _____ in response to ?

12-24 hrs, cytokine

what rae the cytokines involved

interleukin 1, interleukin 6, tumor necrosis factor alpha

most widely used indicator of acute inflammation

C Reactive Protein

who discovered c reactive protein

tillet and francis in 1930

c reactive protein peaks within

48 hrs

it promotes phagocytosis by binding specific receptors found on monocytesacrophages and neutrophils

c reactive protein

average low risk

<1mg/l

high risk

1-3 mg/l

>3mg/L

high risk

crp is easily destroyed by heating at __ for ___

56C for 30 mins

normal level of AAA in adults

5-8 ug/ml

saa has high affinity for

good cholesterol (hdl)

acts as a chemical messenger similar to a cytokine, and it activates monocytes and macrophages

Serum amyloid a

increases more in ____ than in ____

bacterial infection, viral infection

saa peak bet ____ after acyte infecyion

24-48 hrs

major functuon of complement

opsonization


chemotaxis


lysis of cells

OCL

refers to as series of serum protein that are normally present and whose overall function is mediation of inflammatiob

complement

a 52 kd protein that is primarily synthesized in the liver

Alpha 1-antitrypsin

linuts harmful effects of inflammation

AAT

a general plasma inhibitor of proteases that is released by leukocytes


also regulates espression of proinflammatory cytokines such as TNF- alpha, interleukin-1beta and IL6

AAT

increases ____ following inflammation stress and tissue necrosis

2 flods

normal plasma concentration of haptoglobin

40-290 mg/dl

most abundant coagulation factor

fibrinogen

fibrinogen is cleaved by

thrombin

nornal levels of fibrinogen

200-400 mg/dL

deficiency of ceruloplasmin is associated with

wilsons disease

acts as opsonin which is calcium dependent

mannose- binding protein

cardinal signs of inflammation

redness. heat. swelling. pain. loss of function

redness

rubor

heat

calor

swelling

edema

pain

dolor

large granular lymphocytes. null cells. kiss of death

natural killer cells

first line of defense against vurally infected cells

natural killer cells

have the ability to recognized any damaged cell and to eliminate such target cells without prior exposure to them

NK CELLS

inhibitory signal of nk cells

MHC-1

inhibitory receptors that bind with MHC-1

killer cell immunoglobulin like receptors


CD94/NKG2A receptors

activating receptors that binds stress proteins

CD16


NKG20

proteins form channels in the target cell membrane

perforins

packets of enzymes that may enter through tha channels and mediate lysis

Granzymes

small proteins that act ast chemical messenger which regulates immnue system

cytokines