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2.79 Understand that a coordinated response requires a stimulus, a receptor and an effector
To carry out a response, 3 main things are needed:
- A stimulus: A change in environment
- A receptor: Something that detects the change
- An effector: To carry out a response
Example:
- Stimulus: you touch a hot object
- Receptor: nerves in your finger
- Effector: muscles that pull your hand away from the potentially dangerous hot object
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