![](https://webarchive.library.unt.edu/eot2008/20081025115430im_/http://www.nci.nih.gov/images/spacer.gif) |
|
(PA-ruh-SIM-puh-THEH-tik NER-vus SIS-tem)
![](https://webarchive.library.unt.edu/eot2008/20081025115430im_/http://www.nci.nih.gov/images/spacer.gif)
| The part of the nervous system that slows the heart, dilates blood vessels, decreases pupil size, increases digestive juices, and relaxes muscles in the gastrointestinal tract. |
Previous Definitions: | paraneoplastic syndrome, paranoia, parasite, parasitic, parasomnia | Next Definitions: | parathormone, parathyrin, parathyroid cancer, parathyroid gland, parathyroid hormone |
|
![](https://webarchive.library.unt.edu/eot2008/20081025115430im_/http://www.nci.nih.gov/images/spacer.gif) |