1. the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands; [syn: autonomic nervous system, ANS]
WordNet (r) 3.0 (2006):
autonomic nervous system
n 1: the part of the nervous system of vertebrates that controls
involuntary actions of the smooth muscles and heart and
glands [syn: autonomic nervous system, ANS]