ANATOMY

Detailed explanation-1: -The nose is the airconditioner of the airways. Because normal breathing is through the nose, most airborne particles are filtered there; hence the nasal mucosa is the first line of defence against particles in the air.

Detailed explanation-2: -Skin, tears and mucus are part of the first line of defence in fighting infection. They help to protect us against invading pathogens. You have beneficial bacteria growing on your skin, in your bowel and other places in the body (such as the mouth and the gut) that stop other harmful bacteria from taking over.

Detailed explanation-3: -The first line of defense is represented by the doers-the people on the front lines. They’re managing risk, complying with regulations and standards, and carrying out the company’s defined risk management processes daily. The second line of defense is managerial and is responsible for oversight of the doers.

Detailed explanation-4: -Nose. The nose has internal hairs, which act as a physical barrier to infection. Cells in the nose produce mucus which traps pathogens before they can enter the lungs. When the nose is blown, the mucus, and any pathogens that are trapped within it, is removed.

Detailed explanation-5: -Physical defenses provide the body’s most basic form of nonspecific defense. They include physical barriers to microbes, such as the skin and mucous membranes, as well as mechanical defenses that physically remove microbes and debris from areas of the body where they might cause harm or infection.