noun
autonomic nervous system; ANS
Anatomical term for the part of the nervous system that controls involuntary bodily functions.
自律神経系は、心拍や消化など無意識の機能を調節する。
The autonomic nervous system regulates unconscious functions such as heartbeat and digestion.
Compound of 自律 (autonomy) + 神経 (nerve) + 系 (system). The term is a direct translation of the Western medical concept.