Redness and swelling in an infected area is due to:A large number of disease-causing microbes.Heat produced by the invading microbes.More rapid blood flow to the area.The skin producing defence cells.
Question
Redness and swelling in an infected area is due to:A large number of disease-causing microbes.Heat produced by the invading microbes.More rapid blood flow to the area.The skin producing defence cells.
Solution
Redness and swelling in an infected area is primarily due to more rapid blood flow to the area.
Here's a step-by-step explanation:
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When an area of the body becomes infected, the immune system responds by increasing blood flow to the area. This is known as vasodilation.
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The increased blood flow brings more white blood cells to the area to fight off the infection.
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The increased blood flow also causes the area to become warm and red - this is the redness you see.
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The swelling, or edema, is caused by an accumulation of fluid. The small blood vessels in the area become more permeable to allow immune cells to reach the site of infection more easily. This also allows fluid to leak into the tissues, causing swelling.
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While the presence of disease-causing microbes and the production of defense cells by the skin do play a role in the immune response, they are not the direct cause of the redness and swelling.
So, the most accurate answer to your question is: More rapid blood flow to the area.
Similar Questions
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An infection that spreads to several sites and tissue fluids, usually in the bloodstream, is called a infection.
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