body defenses Flashcards
NONSPECIFIC DEFENSES
Anatomic and Physiological Barriers
Inflammatory Response
NONSPECIFIC DEFENSES
o Five signs
- Pain
- Swelling
- Redness
- Heat
- Impaired function
Second stage
- Exudate production
Third stage
- Reparative phase
First stage
- Vascular and cellular response
▪ White blood cells
o Leukocytes
▪ When large numbers of leukocytes
are produced, released by bone
marrow into bloodstream
Leukocytosis
▪ Replacement of destroyed cells by
identical, similar cells
Regeneration
Fragile, gelatinous tissue in early
stages of repair process
Granulation tissue
SPECIFIC DEFENSES
Antigen
Autoantigen
Antibody-Mediated Defenses
Cell-Mediated Defenses
o Substance that induces a state of sensitivity or
immune responsiveness (immunity)
Antigen
o When proteins originate in person’s own body
- Autoantigen
o Also known as cellular immunity
Cell-Mediated Defenses
o Humoral (circulating) immunity
* Defenses in ____
B lymphoctyes
Three groups of activated T cells
- Helper T cells
- Cytotoxic T cells
- Suppressor T cells
