part of part of contributes to morphology of peripheral nervous system nervous system autonomic nervous system ZFA:0001574 EMAPA:16984 divisio autonomica systematis nervosi peripherici EHDAA2:0000158 The autonomic nervous system is composed of neurons that are not under conscious control, and is comprised of two antagonistic components, the sympathetic and parasympathetic nervous systems. The autonomic nervous system regulates key functions including the activity of the cardiac (heart) muscle, smooth muscles (e.g. of the gut), and glands[GO]. EHDA:10095 divisio autonomica systematis nervosi peripherici peripheral autonomic nervous system autonomic part of peripheral nervous system EHDAA:3767 autonomic division of peripheral nervous system AAO:0000033 MA:0000219 Wikipedia:Autonomic_nervous_system pars autonomica systematis nervosi peripherici MESH:D001341 GAID:706 FMA:65553 VHOG:0000396 NCIT:C12673 TAO:0001574 ANS visceral nervous system BTO:0002507 BIRNLEX:1123 neuronames:2054 CALOHA:TS-2001 SCTID:362481007 UBERON:0002410 organ system subdivision