The Vagus nerve

Not fiction, but sounds like poetry:

"Vagus" means wanderer -- the nerve wanders through the body. Previously, it wasn't thought that it goes as far as the pelvic region. But our research and that of other laboratories is showing that it does in fact go to the cervix and uterus and probably the vagina. It carries the impulses from those regions, travels up through the abdomen, goes through the diaphragm, through the thorax (chest cavity), up the neck outside the spinal cord, and into the brain.

An excerpt of an article in Wired.