sympathetic nervous system definition
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- Medical Definition of Sympathetic nervous system. Sympathetic nervous system: A part of the nervous system that serves to accelerate the heart rate, constrict blood vessels, and raise blood pressure. The sympathetic nervous system and the parasympathetic nervous system constitute the autonomic nervous system. Last Editorial Review: 5/13/2016.
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Human Physiology/Print Version The sympathetic trunk is a fundamental part of the sympathetic nervous system, part of the autonomic nervous system. It allows nerve fibres to travel to spinal nerves that are superior and inferior to the one in which they originated.he sympathetic trunk (T1-L2) travels in a downward direction from the skull, just lateral to the vertebral bodies.
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autonomic nervous system Autonomic nervous system (ANS) The part of the nervous system that supplies nerve endings in the blood vessels, heart, intestines, glands, and smooth muscles, and governs their involuntary functioning. The autonomic nervous system is responsible for the biochemical changes involved in experiences of anxiety.
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Autonomic nervous system The autonomic nervous system (ANS), formerly the vegetative nervous system, is a division of the peripheral nervous system that supplies smooth muscle and glands, and thus influences the function of internal organs.
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- Autonomic Nervous System. Autonomic nervous system (ANS): system of neurons that innervates smooth and cardiac muscle and glands; involuntary division of the PNS. I. Overview.
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Comments: Parasympathetic nervous system vs Sympathetic nervous system The sympathetic nervous system, also part of the autonomic nervous system, originates in the spinal cord; specifically in the thoracic and lumbar regions. It controls the body's fight or flight responses, or how the body reacts to perceived danger.he sympathetic nervous system, also part of the autonomic nervous system, originates in the spinal cord; specifically in the thoracic and lumbar regions. It controls the body's fight or flight responses, or how the body reacts to perceived danger.
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Sympathetic nervous system Sympathetic nervous system. The sympathetic nervous system (SNS) is one of the two main divisions of the autonomic nervous system, the other being the parasympathetic nervous system (PSNS). The autonomic nervous system functions to regulate the body's unconscious actions. The sympathetic nervous system's primary process is to stimulate the body's fight-or-flight response. It is, however, constantly active at a basic level to maintain homeostasis.
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Autonomic nervous system Autonomic Nervous System Autonomic nervous system (ANS): system of neurons that innervates smooth and cardiac muscle and glands; involuntary division of the PNS. recall that visceral organs innervated by both the parasympathetic and sympathetic. divisions of the ANS, dual innervation, usually antagonistic; however some structures. exclusively innervated by one division or the other. D. Localized versus diffuse effects of sympathetic and parasympathetic divisions.
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- The Lincoln Memorial. The memorial is to honor Abraham Lincoln, the 16th President of the United States. It also is a monument to freedom since Abraham Lincoln was President during the Civil War and slavery was abolished. Henry Bacon designed the memorial which looks like the Parthenon in Greece. Construction began on February 12, 1914.
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Sympathetic Nervous System: Definition, Function & Effects The parasympathetic nervous system (nicknamed 'the rest and digest system') is the segment that assists with normal autonomic functions. In other words, you are normally in parasympathetic nervous system control for most of your existence.
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sympathetic nervous system 2. any nerve of the sympathetic nervous system. sympathetic nervous system. the part of the autonomic nervous system whose preganglionic fibers arise from cell bodies in the thoracic and lumbar segments of the spinal cord; postganglionic fibers are distributed to the heart, smooth muscle, and glands of the entire body.
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Definitions &Translations Sympathetic (adj). of or relating to the sympathetic nervous system or some of its branches; produced by stimulation on the sympathetic nervious system or some part of it; as, the sympathetic saliva, a modified form of saliva, produced from some of the salivary glands by stimulation of a sympathetic nerve fiber.rinceton's WordNet (3.58 / 14 votes) Rate this definition: sympathetic (adj). of or relating to the sympathetic nervous system. sympathetic neurons; sympathetic stimulation.
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Sympathetic nervous system (January 2009). The sympathetic nervous system is one of the two main divisions of the autonomic nervous system, the other being the parasympathetic nervous system. The autonomic nervous system functions to regulate the body's unconscious actions. The sympathetic nervous system's primary process is to stimulate the body's fight-or-flight response. It is, however, constantly active at a basic level to maintain homeostasis.
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Parasympathetic Nervous System Parasympathetic Nervous System. The Parasympathetic Nervous System (PNS) is a division of the Autonomic Nervous System]] (ANS) that exerts subconscious control on a variety of visceral functions. Here we discuss specific features of the PNS; however, general themes are discussed on the autonomic nervous system page.
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Nervous System Medical Definition of Parasympathetic nervous system. Parasympathetic nervous system: The part of the involuntary nervous system that serves to slow the heart rate, increase intestinal and glandular activity, and relax the sphincter muscles. The parasympathetic nervous system, together with the sympathetic nervous system, constitutes the autonomic nervous system.
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Comments: Parasympathetic nervous system vs Sympathetic nervous system The sympathetic nervous system, also part of the autonomic nervous system, originates in the spinal cord; specifically in the thoracic and lumbar regions. It controls the body's fight or flight responses, or how the body reacts to perceived danger.he parasympathetic nervous system (PNS) controls homeostasis and the body at rest and is responsible for the body's rest and digest function. The sympathetic nervous system (SNS) controls the body's responses to a perceived threat and is responsible for the fight or flight response.
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sympathetic nervous system n. The part of the autonomic nervous system originating in the thoracic and lumbar regions of the spinal cord that in general inhibits or opposes the physiological effects of the parasympathetic nervous system, as in tending to reduce digestive secretions, speed up the heart, and contract blood vessels.ympathetic nervous system-originates in the thoracic regions of the spinal cord; opposes physiological effects of the parasympathetic: reduces digestive secretions; speeds the heart; contracts blood vessels. nervous system, systema nervosum-the sensory and control apparatus consisting of a network of nerve cells.
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- 1 Peripheral nervous system (PNS): a part of the nervous system which includes all the nerves outside of the brain and spinal cord.  Sympathetic nervous system: The part of your nervous system that unconsciously controls your organs and glands when you're excited or frightened.
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parasympathetic nervous system Noun. 1. parasympathetic nervous system-originates in the brain stem and lower part of the spinal cord; opposes physiological effects of the sympathetic nervous system: stimulates digestive secretions; slows the heart; constricts the pupils; dilates blood vessels.parasympathetic.oun. 1. parasympathetic nervous system-originates in the brain stem and lower part of the spinal cord; opposes physiological effects of the sympathetic nervous system: stimulates digestive secretions; slows the heart; constricts the pupils; dilates blood vessels. parasympathetic.
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parasympathetic nervous system parasympathetic nervous system. n. The part of the autonomic nervous system originating in the brainstem and the lower part of the spinal cord that, in general, inhibits or opposes the physiological effects of the sympathetic nervous system, as in tending to stimulate digestive secretions or slow the heart.arasympathetic nervous system. The division of the autonomic (involuntary or unwilled) nervous system that slows heart rate, increases digestive and gland activity, and relaxes the sphincter muscles that close off body organs.
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- n. The part of the vertebrate nervous system that regulates involuntary action, as of the intestines, heart, and glands, and that is divided into the sympathetic nervous system and the parasympathetic nervous system.
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nervous system nervous system definition. The system in the body that controls internal functions of the body and receives, interprets, and responds to stimuli. The nervous system is made up of the brain, the spinal cord, the nerves, and the sense organs, such as the eye and ear.
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- 1 Peripheral nervous system (PNS): a part of the nervous system which includes all the nerves outside of the brain and spinal cord. 2  Sympathetic nervous system: The part of your nervous system that unconsciously controls your organs and glands when you're excited or frightened.he brain and spinal cord are inside your skull and vertebrae (the vertebrae make up your backbone). These bones protect the CNS when you get into accidents. The other part of the nervous system is the Peripheral Nervous System (or PNS). The PNS consists mainly of the nerves that go to and from the CNS.
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Sympathetic nervous system (January 2009). The sympathetic nervous system is one of the two main divisions of the autonomic nervous system, the other being the parasympathetic nervous system. The autonomic nervous system functions to regulate the body's unconscious actions.he sympathetic nervous system is described as being complementary to the parasympathetic nervous system which stimulates the body to rest-and-digest or feed and breed.
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sympathetic nervous system n. The part of the autonomic nervous system originating in the thoracic and lumbar regions of the spinal cord that in general inhibits or opposes the physiological effects of the parasympathetic nervous system, as in tending to reduce digestive secretions, speed up the heart, and contract blood vessels.oun. 1. sympathetic nervous system-originates in the thoracic regions of the spinal cord; opposes physiological effects of the parasympathetic: reduces digestive secretions; speeds the heart; contracts blood vessels. nervous system, systema nervosum-the sensory and control apparatus consisting of a network of nerve cells.
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Parasympathetic nervous system Parasympathetic nervous system. Definition. noun. A division of the (vertebrate) autonomic nervous system whose physiological effects are mostly in opposition to those of the sympathetic nervous system; e.g. it is involved in the slowing of the heart beat and relaxing the muscles. division of the (vertebrate) autonomic nervous system whose physiological effects are mostly in opposition to those of the sympathetic nervous system; e.g. it is involved in the slowing of the heart beat and relaxing the muscles.