What Are The Specific Body Defenses?

Which of the following is a specific defense mechanism?

Specific defense mechanism is the ability of the body to develop immunity against specific pathogens, toxins or foreign things.

This is possible by a special immune system that produces antibodies and/or activated lymphocytes that attack and destroy specific invading organisms or toxins..

What are the four general characteristics of specific defenses?

Terms in this set (15)The four general characteristics of specific defenses include. specificity. … Cellular immune response. – Cytotoxic T cells (aka CD8, MHC I dependent): Recognize and kill altered self-cells. … Tc Cells: … Th cells: … Antibody-Mediated immunity. … Active immunity. … Passive immunity. … Active: Gets sick, then better.More items…

Which are examples of non specific defenses?

Examples of nonspecific defenses include physical barriers, protein defenses, cellular defenses, inflammation, and fever.Barriers. One way for an organism to defend itself against invasion is through barriers that separate the organism from its environment. … Proteins. … Cellular Defenses. … Inflammation. … Fever. … Bibliography.

How do specific and nonspecific defenses work together?

The immune system protects the body from diseasecausing microorganisms. … The non-specific defenses, such as the skin and mucous membranes, prevent microorganisms from entering the body. The specific defenses are activated when microorganisms evade the non-specific defenses and invade the body.

What is an example of a specific immune response?

Specific immunity, also known as adaptive immunity, is specialized immunity for particular pathogens. Helper T-cells, cytotoxic T-cells, and B-cells are involved in specific immunity. The non-specific cells, like macrophages, tell the T- and B-cells that an intruder is present.

Which line of defense is most important?

The third line of defense is most important because it involves the cells and proteins of adaptive immunity, responding directly to specific antigens. All three lines of defense depend on each other to function properly and no single line is more important than the other.

What are the 3 lines of defense?

The original Three Lines of Defense model consisted of the first line (risk owners/managers), the second line (risk control and compliance), and the third line (risk assurance).

What four nonspecific defenses are caused by pathogens invading the body?

Nonspecific defenses include anatomic barriers, inhibitors, phagocytosis, fever, inflammation, and IFN. Specific defenses include antibody (more…)

What are the 4 phases of the immune response?

This can be broken down into four stages: the lag, exponential, steady state, and declining phases. This is the time from initial antigen exposure to when antibodies are detected in the blood, and takes about a week. In this time, specialized B and T cells are activated by contact with the antigen.

What are the primary defenses against viruses?

Defenses against Viruses The primary mechanisms against viruses are NK cells, interferons, and cytotoxic T cells. Antibodies are effective against viruses mostly during protection, where an immune individual can neutralize them based on a previous exposure.

What happens during an inflammatory response?

The inflammatory response (inflammation) occurs when tissues are injured by bacteria, trauma, toxins, heat, or any other cause. The damaged cells release chemicals including histamine, bradykinin, and prostaglandins. These chemicals cause blood vessels to leak fluid into the tissues, causing swelling.

What is meant by non specific defenses?

Nonspecific defenses include physical and chemical barriers, the inflammatory response, and interferons. … These barriers are aided by various antimicrobial chemicals in tissue and fluids. An example of such a substance is lysozyme, an enzyme present in tears that destroys the cell membranes of certain bacteria.

What are the 3 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 are the specific defenses?

Specific defense: the adaptive immune system. … The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing special proteins called antibodies. Antibodies attach to an antigen and attract cells that will engulf and destroy the pathogen.

What are the body’s specific defenses against pathogens?

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 specific and nonspecific defenses?

Immunity from disease is actually conferred by two cooperative defense systems, called nonspecific, innate immunity and specific, acquired immunity. Nonspecific protective mechanisms repel all microorganisms equally, while the specific immune responses are tailored to particular types of invaders.

What are five physical and chemical defenses that prevent pathogens from entering your body?

What is a pathogen? … Name five physical and chemical defenses that prevent pathogens from entering your body. Skin, mucous membranes, cilia (tiny hairs in nose), saliva and tears, digestive system, immune system. How does the inflammation process fight an infection in the body?

What are the two types of specific immunity?

LEVELS OF IMMUNE SYSTEM The human specific immune system is a two level or DUAL SYSTEM consisting of soluble antibodies and special immune cells. The two systems work intimately as a coordinated unit.

Skin immunity is a property of skin that allows it to resist infections from pathogens. 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.

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.

Is mucus a specific defense?

Physical defenses provide the body’s most basic form of nonspecific defense. They include physical barriers to microbes, such as the skin and mucous membranes, as well as mechanical defenses that physically remove microbes and debris from areas of the body where they might cause harm or infection.

What is non specific immune response?

The non-specific immune response is an immediate antigen-independent response, however it is not antigen-specific. Non-specific immunity results in no immunologic memory. … The non-specific immune system involves cells to which antigens are not specific in regards to fighting infection.

What is the 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 are the 4 major players in our immune system?

The main parts of the immune system are: white blood cells, antibodies, the complement system, the lymphatic system, the spleen, the thymus, and the bone marrow. These are the parts of your immune system that actively fight infection.

What are the differences between primary and secondary line of defense?

Primary Immune Response is the reaction of the immune system when it contacts an antigen for the first time. Secondary Immune Response is the reaction of the immune system when it contacts an antigen for the second and subsequent times.