00:01
Hi, in the given question we have to select the options that forms the first line defense.
00:09
So first line defense is provided by the innate immunity and it includes physical barriers, chemical barriers and biological barriers.
00:32
So physical barrier is formed of skin, mucus membrane.
00:37
The chemical barriers include lysosine, which is present in the tears, hcl in stomach.
00:57
Apart from this, it also includes complement proteins and cytokines, pattern recognition molecules, and various other.
01:25
Whereas the biological barrier include the microbiome, which is for the formed of resident microbiota.
01:41
Apart from this, the body functions like cuffing, sneezing, urinating, vomiting, etc.
02:04
These are also included in the first line of defense...