What are examples of specific defenses?
There are two types of specific defense. These include cell-mediated immunity and antibody-mediated immunity. Cell-mediated immunity occurs when T-lymphocytes (T-cells) become activated by exposure to pathogens. Activated T-cells then attack pathogens directly.
What is an example of specific immune defense?
It may be a toxin (injected into the blood by the sting of an insect, for example), a part of the protein coat of a virus, or a molecule unique to the plasma membranes of bacteria, protozoa, pollen, or other foreign cells.
What are the 2 types of specific immune defenses?
The immune system is made up of two parts: the innate, (general) immune system and the adaptive (specialized) immune system. These two systems work closely together and take on different tasks.
Why is the immune system considered a specific defense?
The immune system is considered as specific defense because of the production of antibodies against the specific antigen (foreign body). … The antibodies then form specific amino acids for the antigen to bind on at the binding sites.
How do specific defenses work?
The specific defenses work by recognizing the specific antigen of a microorganism and mounting a response that targets the microorganism for destruction by components of the non-specific system.
Which line of defense is most important?
First line of defense
The body’s most important nonspecific defense is the skin, which acts as a physical barrier to keep pathogens out. Even openings in the skin (such as the mouth and eyes) are protected by saliva, mucus, and tears, which contain an enzyme that breaks down bacterial cell walls.
What is the 1st 2nd and 3rd line of defense?
In the Three Lines of Defense model, management control is the first line of defense in risk management, the various risk control and compliance over- sight functions established by management are the second line of defense, and independent assurance is the third.
What are the 3 major functions of the immune system?
The tasks of the immune system
- to fight disease-causing germs (pathogens) like bacteria, viruses, parasites or fungi, and to remove them from the body,
- to recognize and neutralize harmful substances from the environment, and.
- to fight disease-causing changes in the body, such as cancer cells.