GANGLIONERVOUS SYSTEM Meaning and
Definition
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The ganglionervous system, also known as the sympathetic nervous system or simply the "fight-or-flight" system, is a component of the autonomic nervous system that controls the body's response to stressful or threatening situations. It is responsible for activating several physiological responses, including increasing heart rate, constricting blood vessels, and dilating airways.
The ganglionervous system is regulated by ganglia, which are clusters of nerve cell bodies located outside the spinal cord. These ganglia receive information from the central nervous system and transmit it to various organs and tissues in the body. The ganglionervous system works in conjunction with the parasympathetic nervous system, which promotes rest and relaxation.
During times of stress or danger, the ganglionervous system releases neurotransmitters called catecholamines, such as adrenaline and noradrenaline. These hormones increase blood flow to the muscles, enhance alertness, and boost energy levels, preparing the body for a response. This system helps to ensure survival by enabling rapid reactions to perceived threats.
However, prolonged activation of the ganglionervous system can have negative effects on the body, including increased blood pressure and heart rate, decreased immune system function, and heightened anxiety. Chronic stress and long-term activation of this system have been linked to various health issues, such as cardiovascular disease, gastrointestinal problems, and mental health disorders.
In summary, the ganglionervous system is a vital part of the autonomic nervous system responsible for the body's stress response. It helps to prepare the body for action during threatening situations but can have detrimental effects if activated for prolonged periods.
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Sympathetic nervous system.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for GANGLIONERVOUS SYSTEM
- g anglionervous system
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Etymology of GANGLIONERVOUS SYSTEM
The word "ganglion" has its roots in the Greek word "ganglion", meaning "knot" or "swelling". In anatomy, a ganglion refers to a collection of nerve cell bodies located outside the central nervous system.
The term "nervous system" comes from the Latin word "nervus", meaning "sinew" or "nerve", and the term "systema", meaning "organized body". Thus, the phrase "ganglion nervous system" refers to the collection of ganglia and nerves that make up the peripheral nervous system.
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