APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -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-2: -The skin is the impermeable physical/mechanical barrier that protects many pathogens from entering the body. Similarly, mucosa or mucous membranes that line the immediate internal systems help trap pathogens by producing mucous.

Detailed explanation-3: -The first line of defense against infection are the surface barriers that prevent the entry of pathogens into the body. The second line of defense are the non-specific phagocytes and other internal mechanisms that comprise innate immunity.

Detailed explanation-4: -What Is the Immune System? The immune system is the body’s defense against infections. The immune (ih-MYOON) system attacks germs and helps keep us healthy.