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A-Level Biology OCR A

Pathogens Higher Temp Describe Fever Initiated Response Invasion

The summary explains fever is initiated by cytokines stimulating the hypothalamus to raise body temperature, which inhibits pathogen reproduction and speeds up the immune system.

O resumo explica que a febre é iniciada por citocinas que estimulam o hipotálamo a aumentar a temperatura corporal, inibindo a reprodução de patógenos e acelerando o sistema imunológico.

Front Describe how fever is initiated in response to invasion by pathogens and explain its value for protection against pathogens.
Back Fever:
  • When infected, cytokines stimulate hypothalamus to reset thermostat and temperature increases
  • Most pathogens reproduce best at or below 37*C - higher temp inhibits reproduction
  • Specific immune system works faster at higher temp

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