- A reflex is an action that is performed as a response to a stimulus and without conscious thought eg. moving your hand out of the sun.
- The sensory nerve sends an electrical impulse into the nerves through your arm and up to the Central Nervous System.
- The motor nerve sends the signal to the effector and your body reacts to it.
Reflex actions
- The sensory neuron carries the message from the receptor to the motor neuron which carries the message to the effector to make the interneurons work.
- Reflex actions are rapid and done without thought.
- pain receptor detects a stimulus.
- sensory nerve sends the electrical impulse to the CNS.
- the motor nerve sends the signal to the effector.
- the effector produces a response.
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