OVERVIEW OF THE IMMUNE SYSTEM
THE GOOD BAD AND UGLY OF THE IMMUNE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Because pathogens desire the high temperature for survival. When the temperature increases, it makes it easier for them to survive in the body.
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Because pathogens desire the body’s normal temperature for survival. When the temperature increases, it makes it challenging for them to survive in the body.
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Because pathogens desire the body’s normal temperature for survival. When the temperature is at a normal level, it makes it challenging for them to survive in the body.
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Because pathogens desire the high temperature for survival. When the temperature increases, pathogens can multiply in large number in a short time.
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Detailed explanation-1: -You get a fever because your body is trying to kill the virus or bacteria that caused the infection. Most of those bacteria and viruses do well when your body is at your normal temperature. But if you have a fever, it is harder for them to survive. Fever also activates your body’s immune system.
Detailed explanation-2: -Some pyrogens are produced by body tissue; many pathogens also produce pyrogens. When the hypothalamus detects them, it tells the body to generate and retain more heat, thus producing a fever. Children typically get higher and quicker fevers, reflecting the effects of the pyrogens upon an inexperienced immune system.
Detailed explanation-3: -But when faced with an infection or virus, body temperature often goes up, resulting in a fever. When someone’s body temperature rises to about 38°C (100.4°F0, doctors classify it as a slight fever. Larger increases in body temperature to around 39.5°C (103.1°F) count as a high fever.
Detailed explanation-4: -The heat of fever augments the performance of immune cells, induces stress on pathogens and infected cells directly, and combines with other stressors to provide a nonspecific immune defense.
Detailed explanation-5: -Histamine increases blood flow to the wound site, and increased vascular permeability allows fluid, proteins, phagocytes, and other immune cells to enter infected tissue. These events result in the swelling and reddening of the injured site, and the increased blood flow to the injured site causes it to feel warm.