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  • B5
    • Homeostasis
      • The conditions inside our body must be very carefully controlled if the body is to function effectively. Homeostasis is the maintenance of a constant internal environment. The nervous system and hormones are responsible for this
        • water content
        • negative feedback
        • blood sugar level
        • body temperature
          • This is controlled to maintain the temperature at which the body’s enzymes work best, which is usually 37°C.
    • Diabetes
    • Reflexes
      • When a receptor is stimulated, it sends a signal to the central nervous system, where the brain co-ordinates the response. But sometimes a very quick response is needed, one that does not need the involvement of the brain. This is a reflex action.

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