What Is Specific And Non Specific Defense?

Which are examples of nonspecific 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.


Cellular Defenses.




Is inflammation specific or nonspecific defense?

Nonspecific defenses include anatomic barriers, inhibitors, phagocytosis, fever, inflammation, and IFN. Specific defenses include antibody and cell-mediated immunity.

What is an example of a specific 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 is specific defense?

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.

Is mucus a specific defense?

NON SPECIFIC DEFENSES: Skin and Mucous membranes, antimicrobial chemicals, natural killer cells, phagocytosis, inflammation and fever. b. “constant” region (the stem) – determins the cells and chemicals an antibody can bind to, and how that class of antibody will function.

What is the first line of defense?

The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, ‘friendly’ bacteria and white blood cells called neutrophils.

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.

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.

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 are three types of nonspecific immunity?

What are three types of nonspecific defenses that can prevent the entry and/or establishment of a pathogen in a person’s body? Barriers (skin), Traps (mucous membranes, cilia, hair, ear wax), and Low pH.

What is meant by non specific defense?

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 body’s three defenses?

The Immune System has 3 Lines of Defense Against Foreign Pathogens:Physical and Chemical Barriers (Innate Immunity)Nonspecific Resistance (Innate Immunity)Specific Resistance (Acquired Immunity)

What are non specific responses?

The non-specific response is a generalized response to pathogen infections involving the use of several white blood cells and plasma proteins. Non-specific immunity, or innate immunity, is the immune system with which you were born, made up of phagocytes and barriers.

What is a specific immune response?

Specific immune responses are triggered by antigens. Antigens are usually found on the surface of pathogens and are unique to that particular pathogen. The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing special proteins called antibodies.

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.