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Prevention of Infection

whAT IS the d...

Question

whAT IS the difference between physical and physiological barriers of innate immunity?

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Solution

Physical barriers of innate immunity: They protect from outside.
Skin
Mucous membrane
Saliva
Sweat

Physiological barrier of innate immunity: They provide protection from inside.
Body temperature
Body pH
Secretion of body fluid
Acid secretion

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Q. Which of the following is a physiological barrier in innate immunity

Q. Shot / Long answer type questions.
The barriers in the innate immunity are given in the following table. Identify a, b, C, and d.

	Type of barrier		Barrier
(i)	physical	(a)	skin
(ii)	physiological	(b)	in the eye
(iii)	tears	(c)	interferon
(iv)	cellular	(d)	WBC

Q. Statement 1: Components of innate immunity include physical barriers like skin and mucous membrane of mouth, GI tract and urinary tract etc.

Statement 2: The physical barriers differentiate between internal and external environments and obstruct pathogens from crossing the barrier.

Q. What is innate immunity? Mention any two types of innate immunity barriers.

Q. Which of the following is a physical barrier that provides innate immunity against invading pathogens?

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