Because it is the first thing a pathogen (a bacteria, virus, fungus, or parasite that causes disease) must overcome before it can gain access to your body. The physical defenses include your skin and mucus.
Your skin is the first line of defense.
It depends what sort of pathogen it is and what cells are infected but in general the infected cell is destroyed by lymphocytes and then engulfed by a phagocyte to get rid of what is left.
Yes, some bacteria cause disease, for example. A general term for microorganisms that cause disease is "pathogens."
The four general properties of immunity are specificity, diversity, memory, and self/nonself recognition. Specificity refers to the immune system's ability to target specific pathogens. Diversity refers to the wide range of different antigens the immune system can recognize. Memory involves the immune system's ability to remember previous encounters with pathogens. Self/nonself recognition is the ability to distinguish between self and nonself to avoid attacking the body's own cells.
N/aA pathogen by definition is a disease causing organism
Your skin is the first line of defense.
Your skin is the first line of defense.
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Your skin is the first line of defense.
Nonspecific Defenses
Assuming you're referring to bolstering the German defenses known as the "Atlantic Wall", Hitler sent Gen Erwin Rommelto defend against the expected Allied invasion //
Based on the threat that President Lincoln saw to Washington DC's defenses, General Grant reorganized the city's defenses. He formed the Middle Military Division and placed General Sheridan in command of the defenses.
Innate is a broad general response against any pathogen. It is very quick response but it is limited in how well it can defend your body. It is absolutely necessary to have a functioning innate immunity or your adaptive immunity will not be able to respond efficiently. Adaptive has a very specific response against a pathogen. On first exposure it may time several weeks to acquire the appropriate defenses, however, on secondary exposure it is a very quick response. It has long term memory so you are protected for a long time against that same pathogen.
F. Blaquire has written: 'General observations on the state of affairs in Ireland and its defence against an invasion' -- subject(s): Defenses
Non specific defense mechanisms are more effective because they work against all bacteria and viruses. Examples are skin or tears. Specific defense mechanisms like antibodies work against one type of bacteria or virus. They're needed if a pathogen gets past the nonspecific defense mechanisms.
pathogens.
Erwin Rommel .