Which statement is true about how the nervous system usually communicates with body parts?

Which statement is true about how the nervous system usually communicates with body parts?

- Peripheral nerves take in information and send it to the CNS, which then sends back a directive response.
- Sensory receptors are linked directly to the brain, which processes information coming in and sends messages to the body through the spinal cord.
- The somatic system receives messages from the autonomic system.
- The motor division sends messages to the muscles from the sensory receptors.

I've only a guess. 1-2-4 make sense, & 3 doesn't. I hope there's a better answer.

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