BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPH NODES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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To pump lymph through the vessels
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To create lymph
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To fight infection
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To remove old red blood cells
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Detailed explanation-1: -Antibodies are proteins produced by the immune system in response to infection. They are an important part of the body’s defence system as they work to destroy disease-causing organisms (such as viruses or bacteria) and block them from infecting human cells.
Detailed explanation-2: -1) Antibodies are secreted into the blood and mucosa, where they bind to and inactivate foreign substances such as pathogens and toxins (neutralization). 2) Antibodies activate the complement system to destroy bacterial cells by lysis (punching holes in the cell wall).
Detailed explanation-3: -Examples of antibody functions include neutralization of infectivity, phagocytosis, antibody-dependent cellular cytotoxicity (ADCC), and complement-mediated lysis of pathogens or of infected cells.