Lexic.us

Definition of Autonomic nervous system

1. Noun. The part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands.

Definition of Autonomic nervous system

1. Noun. (neuroanatomy) In humans and other vertebrates, the part of the nervous system that regulates the involuntary activity of the heart, intestines and glands. These activities include digestion, respiration, perspiration, metabolism, and the modulation of blood pressure. ¹

¹ Source: wiktionary.com

Medical Definition of Autonomic nervous system

1. Neurons that are not under conscious control, comprising 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. The autonomic nervous system has two divisions: 1. The sympathetic nervous system that accelerates the heart rate, constricts blood vessels, and raises blood pressure. 2. The parasympathetic nervous system slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles. (03 Jul 1999)

Lexicographical Neighbors of Autonomic Nervous System

Other Resources: