Quick Answer: What Are The Three Lines Of Defense In The Immune System Quizlet?

What line of defense are interferons?

Interferons (IFNs) are low molecular weight proteins that belong to the class of glycoproteins known as cytokines.

IFNs are part of the non-specific immune system and are an important first line of defense against viral infections..

What are the three lines of defense in the immune system?

The immune system’s three lines of defense include physical and chemical barriers, non-specific innate responses, and specific adaptive responses.

What type of Defence is the immune system?

The innate immune system provides this kind of nonspecific protection through a number of defense mechanisms, which include physical barriers such as the skin, chemical barriers such as antimicrobial proteins that harm or destroy invaders, and cells that attack foreign cells and body cells harbouring infectious agents.

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.

What are the four stages of the immune system?

CardsTerm What are the four stages of the immune response?Definition 1. Lag phase 2. Exponential phase 3. Steady state phase 4. Decline phaseTerm What cells allow T cells to form into effector T cells and B cells to form into plasma cells?Definition Helper T cells116 more rows•Jan 30, 2012

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.

What are the three lines of Defence?

What is the Three Lines of Defence model?The first line of defence (functions that own and manage risks) … The second line of defence (functions that oversee or who specialise in compliance or the management of risk) … The third line of defence (functions that provide independent assurance)

What are the body’s first second and third lines of defense in the immune system?

The immune system includes three lines of defense against foreign invaders: physical and chemical barriers, nonspecific resistance, and specific resistance. The second line of defense is nonspecific resistance, which also is considered a function of innate immunity. …

What is the third line of defense against pathogens quizlet?

Immune System – 3rd Line of Defense.

What is the first line of defense in the immune system?

The first line of defence is your innate immune system. Level one of this system consists of physical barriers like your skin and the mucosal lining in your respiratory tract. The tears, sweat, saliva and mucous produced by the skin and mucosal lining are part of that physical barrier, too.

Is fever a first line of defense?

The body’s first line of defense against pathogens includes physical, chemical, and biological barriers. … If pathogens do manage to enter the body, the body’s second line of defense attacks them. The second line of defense includes inflammation, phagocytosis, and fever.

What is a virus that attacks the immune system?

AIDS. HIV, which causes AIDS, is an acquired viral infection that destroys important white blood cells and weakens the immune system. People with HIV/AIDS become seriously ill with infections that most people can fight off.