PATHOLOGY MCQ
IMMUNE RESPONSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Phagocytes and Lymphocytes
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skin, breathing passages, mouth and stomach
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redness, swelling, higher temp.
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T cells and B cells working
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Detailed explanation-1: -Skin. The skin is the largest organ of your body. Tears, mucus and saliva. Your nose, mouth and eyes are obvious entry points for pathogens. Cilia. Stomach acid. Urine flow. ‘Friendly’ (beneficial) bacteria. Neutrophils. 02-Nov-2010
Detailed explanation-2: -The skin is the impermeable physical/mechanical barrier that protects many pathogens from entering the body.
Detailed explanation-3: -The nose is the airconditioner of the airways. Because normal breathing is through the nose, most airborne particles are filtered there; hence the nasal mucosa is the first line of defence against particles in the air.
Detailed explanation-4: -Looking more closely at the meeting point of the lumen with the intestinal wall, the intestinal physical barrier consists of a layer of mucus and epithelial cells that line the lumen and provide a crucial first line of defense against pathogens.
Detailed explanation-5: -Skin is a barrier that serves as one of the body’s first lines of defense against harmful microbes. Specialized immune cells within skin tissue help to fight invading organisms. Yet the skin hosts diverse communities of beneficial bacteria, collectively known as the skin microbiota.