PATHOLOGY

Detailed explanation-1: -Skin is a barrier that serves as one of the body’s first lines of defense against harmful microbes. Specialized immune cells within skin tissue help to fight invading organisms. Yet the skin hosts diverse communities of beneficial bacteria, collectively known as the skin microbiota.

Detailed explanation-2: -The Epidermis The epidermis is the water-resistant outer layer of skin and the body’s first line of defense against environmental elements, ultraviolet radiation, bacteria, and other germs.

Detailed explanation-3: -Skin and mucous membrane are the physical barriers that provide the first line of defence or the external defence. These barriers prevent the entry of microorganisms into the body. Outer tough layer of the skin, the stratumm corneum prevents the entry of bacteria and viruses.