Order is: 2 > 5 > 4 > 1 > 3 for withdrawal reflex.
The complexity of reflexes varies among creatures with neural systems. Reflex arcs are neuronal connections in the nervous system that allow a reflex to happen. A brain signal is started by a stimulus and sent to a synapse. A motor neuron receives the signal and then transmits it across the synapse, evoking the desired reaction. Many reflexes are automatic responses to stimuli that do not require or receive conscious cognition because these neural signals from the body do not always reach the brain.
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