What is the body 2nd line of defense?
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What is the body 2nd line of defense?
The second line of defense is nonspecific resistance that destroys invaders in a generalized way without targeting specific individuals: Phagocytic cells ingest and destroy all microbes that pass into body tissues. For example macrophages are cells derived from monocytes (a type of white blood cell).
What part of the immune system attacks the virus?
A special cell of the immune system called a T cell circulates looking for infections. One type of T cell is called a cytotoxic T cell because it kills cells that are infected with viruses with toxic mediators.
What are the two types of immunity that your body has?
There are two types of immunity: active and passive.
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 is the 1st 2nd and 3rd line of defense immune system?
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.
Which type of cell directly attacks infected cells?
There are two main types of lymphocytes: B cells and T cells. The B cells produce antibodies that are used to attack invading bacteria, viruses, and toxins. The T cells destroy the body’s own cells that have themselves been taken over by viruses or become cancerous.
Is skin innate immunity?
In addition to providing a passive physical barrier against infection, the skin also contains elements of the innate and adaptive immune systems which allows it to actively fight infections. Hence the skin provides defense in depth against infection.
Are antibodies innate or adaptive?
Innate immunity (also called natural or native immunity) provides the early line of defense against microbes….Innate and Adaptive Immunity.
| Innate | Adaptive | |
|---|---|---|
| Blood proteins | Complement, others | Antibodies |
| Cells | Phagocytes (macrophages, neutrophils), natural killer cells, innate lymphoid cells | Lymphocytes |
What is an example of active immunity?
Active immunity can arise naturally, as when someone is exposed to a pathogen. For example, an individual who recovers from a first case of the measles is immune to further infection…
What are the types of passive immunity?
There are two types of passive immunity: artificial and natural. Artificial passive immunity is achieved by infusion of serum or plasma containing high concentrations of antibody.
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