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Exam-NURS 3366 Hughes MECHANISMS OF DEFENSE(100% SOLVED)
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Exam-NURS 3366 Hughes MECHANISMS OFDEFENSE(100% SOLVED)
Innate (AKA "natural") resistance Correct Ans-the defense mechanisms we are born with
1st Line of Defense Correct Ans-Non-specific, Immediate, physical barriers
EX of defensive roles for 1st: Correct Ans-protection from hazardous
environmentdesquamation of skinsecretion of sweat (has anti-fungal/anti-bacterial
properties)
stressors that can breach this defense Correct Ans-lacerations, abrasions, & punctures
eyes Defense Correct Ans-Tears and Eyelashes
stressors that can breach eyes defenses Correct Ans-Sjogren's Syndrome: autoimmune
disease that dries up all lubricating fluids in the body Dry Eye Syndrome: manufacturing of
tears slows down; due to aging
, Exam-NURS 3366 Hughes MECHANISMS OF
DEFENSE(100% SOLVED)
respiratory system defenses Correct Ans-viscosity of mucuscilia of cells in bronchicough
reflex
stressors that can breach respiratory defenses: Correct Ans-cigarette smoking changes
bronchial cells—no more cilia. (metaplasia)cough reflex suppression such as in head injury or
stroke
GI system defenses Correct Ans-saliva - contains protective enzymesstomach - HCL
destroys most microbesgag reflex / vomitingbowels - normal contain "good flora" &
defecation
stressors that can breach GI defenses Correct Ans-Sjogren's Syndrome - dries up saliva, so
less protection in mouthanything that changes the bowel flora can leave us open to invading
microbes; ex of something that might change the bowel flora: antibiotics
genitourinary (GU) system defenses Correct Ans-flow of urine - washes away
microbesvaginal secretions slightly acidic - kills bacteria
, Exam-NURS 3366 Hughes MECHANISMS OF
DEFENSE(100% SOLVED)
stressors that can breach GU defenses Correct Ans-decreased urine flow → kidney
stones/failureanything the changes vag. pH (EX: douching)
2nd Line of Defense Correct Ans-INFLAMMATION, non-specific, immediate
SHEP Correct Ans-swelling, heat, erythema (redness), pain
___________ is a normal, important body mechanism that helps us defend against stressors
and begin the healing process. Correct Ans-Inflammation
Inflammation is Correct Ans-acute and short-lived (2 weeks)
mast cell degranulation leak chemical granules called Correct Ans-local inflammatory
mediators
What are the three local inflammatory mediators? Correct Ans-Histamine, Leukotrienes, &
Prostaglandin (HLP)
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