Question: What Is The Single Most Important Defense The Body Has?

Which line of defense is most important quizlet?

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 is your most important nonspecific defense?

The body’s most important nonspecific defense is the skin, which acts as a physical barrier to keep pathogens out.

Is the inflammatory response is part of the body’s first line of defense?

The inflammatory response is part of the body’s first line of defense. Leukocytes are white blood cells that fight infections and get rid of debris. Barriers that keep out pathogens are the body’s first line of defense. The second line of defense attacks pathogens that manage to enter the body.

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.

What are the potential side effects of removing the thymus in a newborn?

“Removal of the organ in the adult has little effect, but when the thymus is removed in the newborn, T-cells in the blood and lymphoid tissue are depleted, and failure of the immune system causes a gradual, fatal wasting disease,” according to Encyclopedia Britannica.

Does sneezing removes pathogens from your nose?

Mucous membranes secrete mucus, a slimy substance that traps pathogens. The membranes also have hair-like cilia. The cilia sweep mucus and pathogens toward body openings where they can be removed from the body. When you sneeze or cough, pathogens are removed from the nose and throat.

Which immune response has a shorter lag phase?

2° Immune Response If a second dose of the same antigen is given days or even years later, an accelerated 2° or anamnestic immune response (IR) occurs. This lag phase is usually very short (e.g. 3 or 4 days) due to the presence of memory cells. The amount of antibody produced rises to a high level.

What is a specific defense of the body?

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 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 does interferon mean?

Interferons (IFNs, /ˌɪntərˈfɪərɒn/) are a group of signaling proteins made and released by host cells in response to the presence of several viruses. In a typical scenario, a virus-infected cell will release interferons causing nearby cells to heighten their anti-viral defenses.

Is mucus a nonspecific defense?

The mucous membranes lining the nose, mouth, lungs, and urinary and digestive tracts provide another nonspecific barrier against potential pathogens. Mucous membranes consist of a layer of epithelial cells bound by tight junctions.

What are the six agents capable of stimulating an inflammatory response?

The factors that can stimulate inflammation include microorganisms, physical agents, chemicals, inappropriate immunological responses, and tissue death. Infectious agents such as viruses and bacteria are some of the most common stimuli of inflammation.