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1.5 explain that homeostasis consists of two stages:
explain that homeostasis consists of two stages:
- detecting changes from the stable state
- counteracting changes from the stable state
Background
For a state of homeostasis to exist, the body must have some way of detecting stimuli that indicate a change in the body’s internal or external environment.
- A receptor detects a change in some variable in the organism’s internal environment, for example, sensory neurons in the skin pick up a decrease or increase in temperature of air surrounding the body.
- An appropriate response occurs that counteracts the changes and thus maintains the stable environment, for example, shivering to generate heat in muscles.