parasympathetic nervous system

https://doi.org/10.1351/goldbook.11993
Division of the autonomic nervous system involved in stimulating digestive secretions, slowing heart rate, constricting the pupils of the eyes, and dilating blood vessels.
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 895 [Terms] [Paper]