OVERVIEW OF THE IMMUNE SYSTEM
IMMUNITY INNATE AND ADAPTIVE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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decreased b cell activity
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decreased t cell activity
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increased helper t cell
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blocks helper t cell activity
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Detailed explanation-1: -HIV binds to the CD4 molecule on the surface of helper T-cells and replicates within them. This results in destruction of CD4+ T-cells and leads to a steady decline in this population of T-cells.
Detailed explanation-2: -Acquired immunodeficiency may be a complication of diseases such as HIV/AIDS and malnutrition (especially if the person does not eat enough protein). Many cancers may also cause immunodeficiency.
Detailed explanation-3: -The CDC’s definition of AIDS includes: Less than 200 CD4+ T cells per cubic millimeter of blood, compared with about 1, 000 CD4+ T cells for healthy people. CD4+T cells are white blood cells that play an important role in the body’s immune system. These cells are destroyed by HIV.
Detailed explanation-4: -Infection with the human immunodeficiency virus (HIV) is the cause of acquired immune deficiency syndrome (AIDS).