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Questions and Answers
What is the role of pyrogens in the development of a fever?
What is the role of pyrogens in the development of a fever?
- Pyrogens are released by pathogens to weaken the immune system.
- Pyrogens directly attack and destroy pathogens.
- Pyrogens signal the body to increase its temperature by acting on the hypothalamus. (correct)
- Pyrogens are responsible for the physical symptoms of fever, such as chills and sweating.
When does a fever become a cause for concern, requiring medical attention?
When does a fever become a cause for concern, requiring medical attention?
- When the fever persists despite taking medication. (correct)
- When the fever rises above 100 degrees Fahrenheit.
- When the fever lasts for more than 24 hours.
- When the fever is accompanied by a cough.
How does fever potentially help the body fight off infections?
How does fever potentially help the body fight off infections?
- Fever inhibits the growth and reproduction of some pathogens. (correct)
- Fever stimulates the production of antibodies, which directly attack pathogens.
- Fever decreases the body's metabolic rate, conserving energy for fighting infection.
- Fever weakens the immune system, making it easier for the body to fight off infections.
What is the primary reason for seeking medical attention for a fever?
What is the primary reason for seeking medical attention for a fever?
Which of the following is NOT a characteristic of a fever?
Which of the following is NOT a characteristic of a fever?
Flashcards
Fever
Fever
An elevation of body temperature as a defense against infection.
Pyrogens
Pyrogens
Chemicals released by the immune system that induce fever.
Hypothalamus
Hypothalamus
Brain region that regulates body temperature and responds to pyrogens.
Infection Defense
Infection Defense
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Consult a Doctor
Consult a Doctor
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Study Notes
Fever: A Protective Response
- Fever, also known as pyrexia, is a core aspect of the body's natural defense system against infections.
- It is an elevation of the body's normal temperature, typically exceeding 99.6 degrees Fahrenheit when measured orally or 100.4 degrees Fahrenheit rectally.
- Fever results from the body's fight against pathogens, like bacteria, fungi, and viruses, that invade and damage cells.
- The immune system releases chemicals called pyrogens that travel to the hypothalamus, the brain region responsible for regulating temperature.
- Pyrogens bind to specific receptors in the hypothalamus, triggering an elevation of body temperature.
- This temperature increase is believed to be a crucial strategy for killing off pathogens that are sensitive to temperature changes.
Importance of Consulting a Doctor
- While fever is a natural defense mechanism, a persistent fever warrants immediate medical attention.
- A doctor can accurately assess the cause of the fever and recommend appropriate treatment.
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