Final answer:
The sequence of impulses when someone touches your shoulder and you turn around is sensory neuron, CNS response, motor neuron.
Step-by-step explanation:
The correct sequence that your impulses follow when someone touches your shoulder and you turn around is:
- Sensory neuron
- CNS response
- Motor neuron
When someone touches your shoulder, the sensory receptors in your skin detect the sensation and send a nerve impulse along a sensory neuron to the central nervous system (CNS). In the CNS, the impulse is processed and a response is formulated. Finally, the motor neuron carries the impulse from the CNS to the muscle, causing you to turn around.