INFLAMMATION Flashcards
(40 cards)
— a non-specific, defensive process of the body to tissue damage.
— an attempt to dispose of microbes, toxins, or foreign material at the site of injury
INFLAMMATION
5 cardinal signs and symptoms:
a. redness (rubor)
b. pain (dolor)
c. heat (calor)
d. swelling (tumor)
e. loss of function (functio laesa)
— prime symptom of inflammation
— due to inflammation, joints and muscles might feel pain. In particular, the inflamed areas may
be sensitive to touch.
Pain (Dolor)
— due to inflammation, there is more blood flow to the area.
Heat(Calor)
— as the blood flow more to the inflamed area, the blood vessels of the area will be filled with more blood than normal.
— Due to which the inflamed area will appearred in the color.
Redness(Rubor)
the primary cause of swelling is accumulated fluid in the tissues or outside the blood vessel either in a particular area or throughout the body.
Swelling(tumor)
the immobility may result from the pain that restrains movement or from severe swelling that keeps the movement in the area.
Loss of function(functiolaesa)
TYPES OF INFLAMMATION
- acute
- chronic
— harmful pathogens or tissue injury.
— rapid
— a few days
— inflammation improves, or an abscess develops or becomes chronic.
Acute
— pathogens that the body cannot break drown, including some types of viruses, foreign bodies that remain in the system, or overactive immune responses.
— slow
— from months to years
— tissue death, thickening, and scarring of connective tissue
Chronic
— subdivide into two classes; microbial and non-microbial exogenous inducers.
Exogenous inducers
two classes of microbial inducers
- pathogen-associated molecular patterns (PAMPs)
- virulence factors
which are carried by all microorganisms
pathogen-associated molecular patterns(PAMPs)
trigger the inflammatory response due to the effects of their activity.
virulence factors
Example: enzymatic activity produced by helminths and exotoxins produced by bacteria
Microbial inducers
___________ produced by helminths
enzymatic activity
_________ produced by bacteria
exotoxins
include allergens, toxic compounds, irritants, and foreign bodies that are too large to be digested or cause phagosomal damage in macrophages.
Non-Microbial
— signals released by tissues that are either dead, damaged, malfunctioned, or stressed. Two large groups- infectious factors and the non-infectious factors.
Endogenous inducers
category includes bacteria,viruses, and other microorganisms.
Infectious factors
— due to physical injuries such as frostbite,burn, physical injury, foreign bodies, trauma, ionizing radiation, chemical compounds such as glucose, fatty acids, toxins, alcohol, and chemical irritants such as nickel and other trace elements.
— There are also biological inducers, including signals released by damaged cells and physiological due to excitement.
Non-Infectious factors
A variety of chemical mediators from circulation system, inflammatory cells, and injured tissue actively contribute to and adjust the inflammatory response
Mediators
(1) vasoactive amines such as histamine and serotonin,
(2) peptide (e.g., bradykinin), and
(3) eicosanoids (e.g., thromboxanes, leukotrienes, and prostaglandins).
Mediators
vasoactive amines such as ____________
histamine and serotonin