PATHOLOGY MCQ
IMMUNE RESPONSE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The kills infected body cells
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They help the immune system respond quicker if the same pathogen enters the body again
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They signal B Cells
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They cause Inflammation
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Detailed explanation-1: -These cells serve to ‘remember’ the specific antigen involved in this encounter, so that should this antigen enter the body again the T helper cells would be able to activate B cells much faster. Subsequently, antigen-specific antibodies are produced.
Detailed explanation-2: -Memory T cells are antigen-experienced cells that mediate a faster and more potent response upon repeat encounter with antigen. These cells are long-lived and when developed following an infection can protect against subsequent infections with the same pathogen.
Detailed explanation-3: -Memory T and B cells remain, however, and maintain a heightened ability to mount a response to a recurrence of infection with the same pathogen. The antibody and memory T cells remaining in an immunized individual also prevent the activation of naive B and T cells by the same antigen.
Detailed explanation-4: -Memory immune responses Because our memory cells are “experienced, ‘’ we will respond to a second (or subsequent) encounter more quickly. Whereas in a primary encounter, antibodies are not generated for several days, during a memory response antibodies appear in just a few days.