What is the 1st 2nd and 3rd line of defense?
The first line of defense are the physical and chemical barriers, which are considered functions of innate immunity.
The third line of defense is specific resistance, which is considered a function of acquired immunity..
What are the body’s three defenses How do they differ from each other?
How do they differ from each other? The body’s defenses against microbes include external barriers, nonspecific internal defenses, and our immune system. External barriers keep microbes out of the body, nonspecific internal defenses combat allinvading microbes, and the immune system assault specific microbes.
What are the body defenses?
Natural barriers and the immune system defend the body against organisms that can cause infection. (See also Lines of Defense.) 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.
What are the 3 major functions of the immune system?
Describe the three major functions of the immune system. Battle infection. Maintains homeostasis by eliminating damaged cells. Protects the body against foreign organisms.
Why are there 3 lines of defense?
The Three Lines of Defense model provides a simple and effective way to enhance communications on risk management and control by clarifying essential roles and duties. … Each of these three “lines” plays a distinct role within the organization’s wider governance framework.
What is the 2nd line of defense?
If pathogens are able to get past the first line of defence, for example, through a cut in your skin, an infection develops. The second line of defence is a group of cells, tissues and organs that work together to protect the body. This is the immune system.