NEET PG DENTAL EXAM

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 outermost portion of the epidermis, known as the stratum corneum, is relatively waterproof and, when undamaged, prevents most bacteria, viruses, and other foreign substances from entering the body.

Detailed explanation-3: -The skin barrier prevents excessive water loss (inside–outside barrier) and the entry of harmful substances from the environment (outside–inside barrier). The physical barrier is predominantly located in the stratum corneum.