What are the physical barriers in the first line of Defence?
The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, ‘friendly’ bacteria and white blood cells called neutrophils.
Which body defense is a physical barrier?
The skin
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.
What are the three types of barriers in the first line of defense?
Barriers to Pathogens. The body’s first line of defense consists of three different types of barriers that keep most pathogens out of body tissues. The types of barriers are mechanical, chemical, and biological barriers.
What are three 3 external physical barriers that help the body to defend against infection?
Natural barriers include the skin, mucous membranes, tears, earwax, mucus, and stomach acid. Also, the normal flow of urine washes out microorganisms that enter the urinary tract.
How is skin a physical barrier?
The skin covers almost all parts of your body to prevent infection from pathogens. If it is cut or grazed it immediately begins to heal itself, often by forming a scab, which prevents infection as the skin acts as a physical barrier.
What is the first line of defense quizlet?
The first line of the defense is the surface barrier. Skin as a chemical and physical defense.
What do physical barriers include?
Physical barriers can include things like steps, stairways, kerbs, exterior surfaces and paving, parking areas, building entrances and exits (including emergency escape routes), internal and external doors, gates, toilets and washing facilities, public facilities (such as telephones, counters or service desks).
What are the 5 physical barriers?
The major environmental / physical barriers are Time, Place, Space, Climate and Noise. Some of them are easy to alter whereas, some may prove to be tough obstacles in the process of effective communication.
What is first and second line of defense?
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.
What does the first line of defense mean?
If you refer to a method as the first line of, for example, defense or treatment, you mean that it is the first or most important method to be used in dealing with a problem. Residents have the responsibility of being the first line of defense against wildfires. See full dictionary entry for line.
How does the first line of defense protect the body against pathogens quizlet?
in the first line of defense, the surfaces of the skin, breathing passages, mouth, and stomach function as barriers to pathogens. these barriers trap and kill most pathogens with which you come in contact.