IMMUNOLOGY

OVERVIEW OF THE IMMUNE SYSTEM

LYMPHATIC TISSUES AND ORGANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Recovery from a viral illness and not having this illness again is because of
A
artifical active immunity
B
Innate imunity
C
WBC production
D
Natural acquired immunity
Explanation: 

Detailed explanation-1: -Adaptive immunity: Adaptive (or active) immunity develops throughout our lives. We develop adaptive immunity when we’re exposed to diseases or when we’re immunized against them with vaccines. Passive immunity: Passive immunity is “borrowed” from another source and it lasts for a short time.

Detailed explanation-2: -Naturally acquired active immunity occurs after an infection activates the person’s immune system. For example, non-immunized children who develop measles and recover from the illness, get better because they have made an effective immune response against the measles virus.

Detailed explanation-3: -If an antigen enters the body and B-cells recognize it (either from having had the disease before or from being vaccinated against it), B-cells will produce antibodies. When antibodies attach to an antigen (think a lock–key configuration), it signals other parts of the immune system to attack and destroy the invaders.

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