Which of the following barriers is NOT includ | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Innate immunity is non-specific type of defense that is present at the time of birth. It consists of four types of barriers:$1$. Physical barriers

Vedclass · Accepted Answer

Chemical

Vedclass · Answer

(B) Innate immunity is non-specific type of defense that is present at the time of birth. It consists of four types of barriers:$1$. Physical barriers: e.g.,skin,mucus coating of the epithelium lining the respiratory,gastrointestinal,and urogenital tracts.$2$. Physiological barriers: e.g.,acid in the stomach,saliva in the mouth,and tears from eyes.$3$. Cellular barriers: e.g.,polymorpho-nuclear leukocytes ($PMNL$-neutrophils),monocytes,and natural killer cells in the blood.$4$. Cytokine barriers: e.g.,virus-infected cells secrete proteins called interferons which protect non-infected cells from further viral infection.Since all options (Physical,Chemical,Physiological,Cellular) are technically part of the innate immunity classification (where Chemical is often grouped under Physiological or Physical),the question implies a standard classification. However,based on $NCERT$,the four barriers are Physical,Physiological,Cellular,and Cytokine. 'Chemical' is not listed as a primary category in $NCERT$,making it the correct choice for '$NOT$ included'.

Column-$I$ (Types of immunity)	Column-$II$ (Example)
$A$. Natural active	$p$. Immunity developed by heredity
$B$. Artificial passive	$q$. From mother to foetus through placenta
$C$. Artificial active	$r$. Injection of antiserum to travellers
$D$. Natural passive	$s$. Fighting infections naturally
	$t$. Induced by vaccination

Which of the following barriers is $NOT$ included in innate immunity?

Similar Questions

What does the indicated part in the given figure represent?

The defence mechanism of the body against different diseases is known as:

An antigen is

What does the term 'memory' of the immune system mean?

Vedclass Test Series

Exam Paper Generator

Online Exam Module