Zusammenfassung der Ressource
3. Inflammation
- inflammation
- deals with infected
organisms where they have
entered the body
- sends out disttress
signals to WBC's to
come to the scene
- redness-due to
vasodilation of
blood vessels in
the infected area
to increase blood
flow
- heat - result of increased blood flow
- swelling - extra blood forces fluid into the damaged tissues - allows
immune cells from blood to get to site of infection
- pain - swollen tissues press on nerves
- innate immunity is NOT
only physical defenses
- inflammation triggered by damaged cells
- phagocytes accumalate to increase rate at which
bacteria and debris can be dealt with by
phagocytosis
- ruptured local cells, mast cells
and basophills release alarm
chemicals such as histamines
and kinins
- causes vasodilation
- leads to signs of inflammation
- attract other cells from blood to the area
- early inflammation and phagocytosis are non-specific
- used against any invading pathogen
- sometimes this is all the response that is needed
- sometimes these responses keep infection under control
until specific adaptive immunity has been tailor made to
that specific pathogen
- 3.1.2
- when a pathogen enters
millions of cells try to defend
- bacteria, viruses and
fungi are prevalent in
environment
- most are not harmful
- some can quickly and
aggressively invade
given the chance
- small cuts/pricks
easily become
septic
- some symptoms due
to bacteria causing
damage
- some symptoms
are due to immune
response