Definitions for autonomic nervous system
au·to·nom·ic ner·vous sys·tem

Princeton's WordNetRate this definition:0.0 / 0 votes

1. autonomic nervous system, ANSnoun

   the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands

WiktionaryRate this definition:0.0 / 0 votes

1. autonomic nervous systemnoun

   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.

WikipediaRate this definition:0.0 / 0 votes

1. Autonomic nervous system

   The autonomic nervous system (ANS), formerly referred to as the vegetative nervous system, is a division of the peripheral nervous system that supplies internal organs, smooth muscle and glands. The autonomic nervous system is a control system that acts largely unconsciously and regulates bodily functions, such as the heart rate, its force of contraction, digestion, respiratory rate, pupillary response, urination, and sexual arousal. This system is the primary mechanism in control of the fight-or-flight response. The autonomic nervous system is regulated by integrated reflexes through the brainstem to the spinal cord and organs. Autonomic functions include control of respiration, cardiac regulation (the cardiac control center), vasomotor activity (the vasomotor center), and certain reflex actions such as coughing, sneezing, swallowing and vomiting. Those are then subdivided into other areas and are also linked to autonomic subsystems and the peripheral nervous system. The hypothalamus, just above the brain stem, acts as an integrator for autonomic functions, receiving autonomic regulatory input from the limbic system.Although conflicting reports about its subdivisions exist in the literature, the autonomic nervous system has four branches: the sympathetic nervous system, the parasympathetic nervous system, the visceral sensory nervous system and the enteric nervous system. Some textbooks do not include the enteric nervous system as part of this system. The sympathetic nervous system is often considered the "fight or flight" system, while the parasympathetic nervous system is often considered the "rest and digest" or "feed and breed" system. In many cases, both of these systems have "opposite" actions where one system activates a physiological response and the other inhibits it. An older simplification of the sympathetic and parasympathetic nervous systems as "excitatory" and "inhibitory" was overturned due to the many exceptions found. A more modern characterization is that the sympathetic nervous system is a "quick response mobilizing system" and the parasympathetic is a "more slowly activated dampening system", but even this has exceptions, such as in sexual arousal and orgasm, wherein both play a role.There are inhibitory and excitatory synapses between neurons. A third subsystem of neurons has been named as non-noradrenergic, non-cholinergic transmitters (because they use nitric oxide as a neurotransmitter) and are integral in autonomic function, in particular in the gut and the lungs.Although the ANS is also known as the visceral nervous system and although most of its fibers carry non-somatic information to the CNS, many authors still consider it only connected with the motor side. Most autonomous functions are involuntary but they can often work in conjunction with the somatic nervous system which provides voluntary control.

ChatGPTRate this definition:0.0 / 0 votes

1. autonomic nervous system

   The autonomic nervous system is a component of the peripheral nervous system that regulates involuntary physiological processes, such as heart rate, digestion, respiratory rate, pupillary response, and sexual arousal. It is divided into two main branches: the sympathetic and parasympathetic nervous systems, which generally function in opposition to maintain homeostasis in the body.

WikidataRate this definition:0.0 / 0 votes

1. Autonomic nervous system

   The autonomic nervous system is the part of the peripheral nervous system that acts as a control system, functioning largely below the level of consciousness, and controls visceral functions. The ANS affects heart rate, digestion, respiratory rate, salivation, perspiration, pupillary dilation, micturition, and sexual arousal. Most autonomous functions are involuntary but a number of ANS actions can work alongside some degree of conscious control. Everyday examples include breathing, swallowing, and sexual arousal, and in some cases functions such as heart rate. Within the brain, the ANS is located in the medulla oblongata in the lower brainstem. The medulla's major ANS functions include respiration, cardiac regulation, vasomotor activity, and certain reflex actions. These then subdivide into other areas and are also linked to ANS subsystems and nervous systems external to the brain. The hypothalamus, just above the brain stem, acts as an integrator for autonomic functions, receiving ANS regulatory input from the limbic system to do so.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Autonomic Nervous System

   The enteric, parasympathetic, and sympathetic nervous systems taken together. Generally speaking, the autonomic nervous system regulates the internal environment during both peaceful activity and physical or emotional stress. Autonomic activity is controlled and integrated by the central nervous system, especially the hypothalamus and the solitary nucleus, which receive information relayed from VISCERAL AFFERENTS; these and related central and sensory structures are sometimes (but not here) considered to be part of the autonomic nervous system itself.

Matched Categories

1. • Neural Structure

How to pronounce autonomic nervous system?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say autonomic nervous system in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of autonomic nervous system in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of autonomic nervous system in Pythagorean Numerology is: 2

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=autonomic nervous system
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Autonomic_Nervous_System
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Autonomic_Nervous_System
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=autonomic nervous system