Patho CH 3: Inflammation Flashcards
(80 cards)
2nd line of defense
ex
Inflammation - nonspecific - innate
the same regardless of injury
ex: loss of function, increased capillary permeability, swelling
3rd line of defense
immune response - specific
depends on type of invader
examples of first line of defense
blinking
cough
stomach acid
skin oils
mucous
vascular response
chemical mediators
vasodilation and increased permeability
more blood to injured site
causes dilation of blood vessels (and bronchoconstriction) – stored in Mast Cells
histamine
vasodilator, inc permeability, activate pain receptors, (and bronchoconstrictor)
Prostaglandins
phagocytic cell - primary effector cell against infection and tissue damage - WBC
Leukocyte
PMN (polymorphonuclear neutrophils)
leukocyte
clotting and hemostasis
Platelets
release histamine (and serotonin and heparin) – WBC – also contain cytokines
Mast Cells
many jobs – provide signals to regulate inflammation and immune response
Cytokines
WBC - all over the body – major phagocytic cells – recognize and ingest something that is foreign - scavengers of the blood
Macrophages
WBC – a BIG player in immune protection mostly in lymph nodes, spleen, etc. – detect foreign antigens.
Lymphocytes
three steps need for chemical response
chemotaxis
cellular adherence
cellular migration
cause of redness
vasodilation
increase of blood to injured area
cause of heat
vasodilation
increased blood flow to injured site
cause of swelling
extracellular fluid accumulation because of increased vascular permeability
cause of pain
increased vascular permeability
reason for loss of function
tissue damage
treatment for inflammation
RICE
Reduce blood flow
Decrease swelling
Block the action of chemical mediators
Decrease pain
microorganism overcomes the immune system
Infection
non-healing lesion
Ulceration
disruption of a closed wound
wound splits apart why
Dehiscence
not enough sutures - pressure
scar forms beyond the site of injury
keloids