autonomic nervous system

Physiology

(noun)

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 blood pressure modulation.

Related Terms

  • parasympathetic
  • sympathetic nervous system
  • norepinephrine
  • sympathetic
  • enteric nervous system
  • baroreceptor

(noun)

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.

Related Terms

  • parasympathetic
  • sympathetic nervous system
  • norepinephrine
  • sympathetic
  • enteric nervous system
  • baroreceptor
Psychology

(noun)

The part of the nervous system that regulates the involuntary activity of the heart, intestines, and glands, including digestion, respiration, perspiration, metabolism, and blood-pressure modulation.

Related Terms

  • polysynaptic reflex
  • parasympathetic nervous system
  • monosynaptic reflex
  • somatic nervous system
  • sympathetic nervous system
  • efferent
  • afferent
Biology

(noun)

the part of the nervous system that regulates the involuntary activity of the heart, intestines and glands

Related Terms

  • meninges
  • central nervous system
  • peripheral nervous system
  • cerebrospinal fluid

Examples of autonomic nervous system in the following topics:

  • Divisions of the Autonomic Nervous System

    • The autonomic nervous system (ANS) contains two subdivisions: the parasympathetic (PSNS) and sympathetic (SNS) nervous systems.
    • The autonomic nervous system (ANS) is classically divided into two subsystems: the parasympathetic nervous system (PSNS) and sympathetic nervous system (SNS).
    • The enteric nervous system is sometimes considered part of the autonomic nervous system, and sometimes considered an independent system.
    • In the autonomic nervous system, preganglionic neurons connect the CNS to the ganglion.
    • Distinguish between the parasympathetic and sympathetic subsystems of the autonomic nervous system
  • Control of Autonomic Nervous System Function

    • The medulla oblongata, in the lower half of the brainstem, is the control center of the autonomic nervous system.
    • The autonomic nervous system (ANS) is the part of the peripheral nervous system that controls involuntary functions that are critical for survival.
    • The hypothalamus acts to integrate autonomic functions and receives autonomic regulatory feedback from the limbic system to do so.
    • The sympathetic division of the ANS is often referred to as the sympathetic nervous system (SNS).
    • The medulla is a subregion of the brainstem and is a major control center for the autonomic nervous system.
  • Comparing the Somatic and Autonomic Nervous Systems

    • The peripheral nervous system (PNS) is divided into the somatic nervous system and the autonomic nervous system.
    • The somatic nervous system consists of three parts:
    • The autonomic nervous system (ANS) is the part of the peripheral nervous system that acts as a control system, functioning largely below the level of consciousness and controlling visceral functions.
    • The ANS is classically divided into two subsystems: the parasympathetic nervous system (PSNS) and sympathetic nervous system (SNS).
    • The enteric nervous system is sometimes considered part of the autonomic nervous system, and sometimes considered an independent system.
  • Autonomic Nervous System (ANS)

    • The autonomic nervous system is a part of the peripheral nervous system that controls visceral functions such as heart rate and digestion.
    • The autonomic nervous system (ANS or visceral nervous system or involuntary 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 .
    • It is classically divided into two subsystems: the parasympathetic nervous system (PSNS) and sympathetic nervous system (SNS).
    • The enteric nervous system is sometimes considered part of the autonomic nervous system, and sometimes considered an independent system.
    • An illustration of neural control of the gut wall by the autonomic nervous system and the enteric nervous system.
  • Parasympathetic Responses

    • The parasympathetic nervous system regulates organ and gland functions during rest and is considered a slowly activated, dampening system.
    • The parasympathetic nervous system (PSNS, or occasionally PNS) is one of the two main divisions of the autonomic nervous system (ANS).
    • The autonomic nervous system (ANS, or visceral nervous system, or involuntary nervous system) is the part of the peripheral nervous system that acts as a control system, functioning largely below the level of consciousness and controlling visceral functions.
    • The sympathetic nervous system can be considered a quick response, mobilizing system; and the parasympathetic system is a more slowly activated, dampening system.
    • The parasympathetic nervous system, shown in blue, is a division of the autonomic nervous system.
  • Autonomic Nervous System

    • The autonomic nervous system, the relay between the CNS and internal organs, is divided into the sympathetic and parasympathetic systems.
    • The autonomic nervous system (ANS) serves as the relay between the central nervous system (CNS) and the internal organs.
    • There are two divisions of the autonomic nervous system that often have opposing effects: the sympathetic nervous system and the parasympathetic nervous system .
    • Autonomic responses are mediated by the sympathetic and the parasympathetic systems, which are antagonistic to one another.
    • In the autonomic nervous system, a preganglionic neuron of the CNS synapses with a postganglionic neuron of the parasympathetic nervous system.
  • Parasympathetic (Craniosacral) Division

    • Parasympathetic ganglia are the autonomic ganglia of the parasympathetic nervous system that lie near or within the organs they innervate.
    • Parasympathetic ganglia are the autonomic ganglia of the parasympathetic nervous system, blue fibers).
    • Because of its location, the parasympathetic system is commonly referred to as having craniosacral outflow, in contrast to the sympathetic nervous system, which is said to have thoracolumbar outflow.
    • The parasympathetic nervous system, shown in blue, is a division of the autonomic nervous system.
    • Describe features of the parasympathetic division of the autonomic nervous system
  • Introduction to the Nervous System

    • The nervous system can be divided into two major parts—the central nervous system (CNS) and the peripheral nervous system (PNS).
    • The PNS can be further subdivided into the autonomic nervous system and the somatic nervous system.
    • The autonomic nervous system regulates involuntary actions such as internal-organ function and blood-vessel movement.
    • The autonomic nervous system is made of two components, which work in opposition to one another: the sympathetic nervous system, responsible for the body's "fight-or-flight" response to danger, and the parasympathetic nervous system, which calms the body back down.
    • The nervous system of the human body, including the brain and spinal cord (central nervous system) and all the nerves of the body (peripheral nervous system).
  • Enteric Nervous System

    • The enteric nervous system (ENS) is a subdivision of the autonomic nervous system (ANS) that directly controls the gastrointestinal system.
    • Neurogastroenterology is the study of the enteric nervous system, a subdivision of the autonomic nervous system (ANS) that directly controls the gastrointestinal system.
    • Although it receives considerable innervation from the autonomic nervous system, it can and does operate independently of the brain and the spinal cord.
    • The enteric nervous system can operate autonomously.
    • An illustration of neural control of the gut wall by the autonomic nervous system and the enteric nervous system.
  • Autonomic Reflexes

    • The autonomic nervous system (ANS, visceral nervous system, or involuntary nervous system) is the part of the peripheral nervous system that acts as a control system.
    • 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.
    • The ANS is classically divided into two subsystems: the parasympathetic nervous system (PSNS) and sympathetic nervous system (SNS) that operate independently in some functions and interact co-operatively in others.
    • The enteric nervous system is also sometimes considered part of the autonomic nervous system, and sometimes considered an independent system.
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