PATHOLOGY

Detailed explanation-1: -The skin, nails and hair form the integumentary system, which stops dirt and pathogens from entering the body. You also have the internal defense systems, which include white blood cells and the antibodies they produce, otherwise known as the immune system.

Detailed explanation-2: -The innate immune system is the body’s first line of defense against germs entering the body. It responds in the same way to all germs and foreign substances, which is why it is sometimes referred to as the “nonspecific” immune system.

Detailed explanation-3: -Innate and adaptive immune system Both of these subsystems are closely linked and work together whenever a germ or harmful substance triggers an immune response. The innate immune system provides a general defense against harmful germs and substances, so it’s also called the non-specific immune system.