Which of the following statements is true about the sympathetic nervous system?
1) Preganglionic axons travel in spinal nerves
2) They travel through the paravertebral ganglion without synapsing
3) They exit the sympathetic chain as the abdominopelvic splanchnic nerves
4) They synapse in prevertebral ganglia
5) Postganglionic axons follow arteries to reach targets in the abdomen or pelvis (periarterial plexus)