Which of the following is an example of a phy | vedclass

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(A) The human body has various innate immunity barriers to prevent the entry of pathogens. $1$. Physical barriers: These include the skin and the mucu

Vedclass · Accepted Answer

Saliva

Vedclass · Answer

(A) The human body has various innate immunity barriers to prevent the entry of pathogens. $1$. Physical barriers: These include the skin and the mucus coating of the epithelium lining the respiratory,gastrointestinal,and urogenital tracts. $2$. Physiological barriers: These include acid in the stomach,saliva in the mouth,and tears from the eyes,which prevent microbial growth. $3$. Cellular barriers: These include leukocytes like $PMNL$-neutrophils,monocytes,and macrophages. Since saliva prevents microbial growth in the mouth,it is classified as a physiological barrier. Therefore,the correct option is $A$.

Column-$I$	Column-$II$
$(1)$ Typhoid	$(x)$ Plasmodium
$(2)$ Malaria	$(y)$ Rhino virus
$(3)$ Pneumonia	$(z)$ Haemophilus influenzae
$(4)$ Common cold	$(v)$ Streptococcus pneumoniae
	$(w)$ Salmonella typhi

Which of the following is an example of a physiological barrier in the human body?

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Match the following columns:

Column-$I$ Column-$II$

$(1)$ Typhoid $(x)$ Plasmodium

$(2)$ Malaria $(y)$ Rhino virus

$(3)$ Pneumonia $(z)$ Haemophilus influenzae

$(4)$ Common cold $(v)$ Streptococcus pneumoniae

$(w)$ Salmonella typhi

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