Principles of Homeostasis

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  • Principles of Homeostasis
    • Homeostasis in action
      • The conditions in your body are your internal environment.
      • Your organs can't work properly if this keeps changing.
      • There needs to be a balance between the the regulation of the internal conditions of cells to maintain optimum conditions for functioning in response to internal and external changes. T
      • Internal conditions that are controlled are body temperature, water content of the body and blood glucose concentration.
    • Working Together
      • Detecting changes and responding to them involves automatic control systems including nervous responses in your nervous system and chemical responses in your hormone system.
      • Homeostasis involves coordination and control. They need to respond to changes in their internal environment.
    • The demands of a control system
      • Receptor cells detect stimuli (changes) in the internal or external environment
      • Coordination centres are areas that receive and process information from the receptors. They send out signals and coordinate the response of the body. They include the brain and the spinal cord.
      • Effectors are muscles or glands that bring about responses to the stimulus that has been received.

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