PATHOLOGY MCQ
IMMUNE RESPONSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is a first line of defense?
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Antibodies
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mucus in you nose
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Red blood cells
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your white blood cells
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Explanation:
Detailed explanation-1: -Skin, tears and mucus are part of the first line of defence in fighting infection. They help to protect us against invading pathogens.
Detailed explanation-2: -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-3: -The nose has several defence mechanisms to neutralise respiratory viruses and the first is mucociliary clearance which clears inhaled viruses towards the acid environment of the stomach where acid sensitive respiratory viruses are destroyed.
There is 1 question to complete.