The 'first line of defence' is known as:

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(C) The 'first line of defence' in the human body consists of physical and physiological barriers that prevent the entry of pathogens.Skin is the prim

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Skin

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(C) The 'first line of defence' in the human body consists of physical and physiological barriers that prevent the entry of pathogens.Skin is the primary physical barrier that acts as the first line of defence by preventing the entry of microorganisms into the body.Other components like mucus and secretions also contribute to this barrier,but among the given options,skin is the correct answer.

List-$I$	List-$II$
$a$. Cellular barrier	$i$. Interferons
$b$. Cytokine barrier	$ii$. Mucus
$c$. Physical barrier	$iii$. Neutrophils
$d$. Physiological barrier	$iv$. $HCl$ in gastric juice

Similar Questions

Match List-$I$ with List-$II$ :

List-$I$ List-$II$

$a$. Cellular barrier $i$. Interferons

$b$. Cytokine barrier $ii$. Mucus

$c$. Physical barrier $iii$. Neutrophils

$d$. Physiological barrier $iv$. $HCl$ in gastric juice

Choose the correct answer from the options given below:

Which cells are responsible for the production of antibodies?

Assertion $(A)$: The human body is exposed to a large number of infectious agents daily,yet only a few result in disease. Reason $(R)$: The human body possesses an immune system. Which option is correct for Assertion $(A)$ and Reason $(R)$?

Virus-infected cells secrete proteins called

Which molecule is represented by the structure $H_2L_2$?

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