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Topic: Parasympathetic nervous system



  
 Autonomic nervous system - Wikipedia, the free encyclopedia
The preganglionic parasympathetic cell bodies are situated in the brain stem (cranial parasympathetic) and in the sacral spinal cord (sacral parasympathetic).
The thoracolumbar parasympathetic fibers arise from the dorsolateral region of the anterior column of the gray matter of the spinal cord and pass with the anterior roots of all the thoracic and the upper two or three lumbar spinal nerves.
The enteric nervous system regulates secretions of the intestinal glands, regeneration of the intestinal epithelium, and intestinal motility (movement of the gut).
http://en.wikipedia.org/wiki/Autonomic   (3616 words)

  
 [No title]
In vertebrates, the sympathetic nervous system is characterized by a trunk or column of ganglia parallelling the segmentation of the spinal cord.
Darwin neglected the importance of treating the nervous system as a structure that is vulnerable to the pressures of evolution.
The autonomic nervous system is related to visceral state regulation and the regulation of behaviors associated with mobilization or immobilization.
http://www.wam.umd.edu/~sporges/nyas/nyas.txt   (6445 words)

  
 Lesson 9 - The Nervous System - Page 1
The nervous system consists of the brain, the spinal cord, and the network of nerves throughout the rest of the body.
The nervous system provides a rapid means for the various parts of the body to communicate with each other.
The sympathetic system tends to stimulate a particular function while the parasympathetic tends to calm.
http://www.naturalhealthschool.com/9_1.html   (543 words)

  
 Autonomic Nervous System
The autonomic nervous system conveys sensory impulses from the blood vessels, the heart and all of the organs in the chest, abdomen and pelvis through nerves to other parts of the brain (mainly the brain stem which consists of the medulla, pons and hypothalamus).
Through these nervous pathways, the autonomic nerves convey stimuli resulting in largely unconscious, reflex, bodily adjustments such as in the size of the pupil, the digestive functions of the stomach and intestines, the rate and depth of respiration and dilatation or constriction of the blood vessels.
The afferent nerves sub serving both systems convey impulses from sensory organs, muscles, the circulatory system and all the organs of the body to the controlling centers in the medulla, pons and hypothalamus.
http://www.drwastl.org/files/autonomic.html   (1199 words)

  
 Nervous System
The fibres of the parasympathetic system are found in some cranial nerves and in the sacral 2,3,4 spinal nerves.
The somatic nervous system is responsible for the voluntary control of skeletal muscle and for the collection of sensory information from the body.
Motor fibres from the sympathetic and parasympathetic divisions of this system control involuntary striated muscle such as that in the heart, and involuntary smooth muscle such as that in the respiratory, digestive, cardiovascular, renal and reproductive systems.
http://www.geocities.com/CapeCanaveral/Launchpad/5172/nervous.html   (1371 words)

  
 Parasympathetic nervous system (from human nervous system) --  Encyclopædia Britannica
The sympathetic nervous system connects the internal organs to the brain by spinal nerves.
Everything that humans sense, consider, and effect and all the unlearned reflexes of the body depend on the functioning of the nervous system.
system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body.
http://www.britannica.com/eb/article-75587   (847 words)

  
 the nervous system
Receptors are parts of the nervous system that sense changes in the internal or external environments.
The autonomic system controls muscles in the heart, the smooth muscle in internal organs such as the intestine, bladder, and uterus.
Input to the nervous system is in the form of our five senses: pain, vision, taste, smell, and hearing.
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookNERV.html   (3645 words)

  
 Parasympathetic Nervous System
Parasympathetic innervation of the iris constricts the pupillary opening, again shortening and clearing focus, as well as reducing the brightness of the image.
Always remember that visceral sensation is independent of the autonomic system, but the afferent axons follow through the same nerves as the efferents--both of the sympathetic and parasympathetic.
Parasympathetic innervation contracts the ciliary muscle ring, reducing tension on the lens; the lens then rounds up for near focus.
http://sky.bsd.uchicago.edu/lcy_ref/synap/parasympathetic.html   (1934 words)

  
 The Peripheral Nervous System
The main nerves of the parasympathetic system are the tenth cranial nerves, the vagus nerves.
The preganglionic motor neurons of the sympathetic system arise in the spinal cord.
Other preganglionic parasympathetic neurons also extend from the brain as well as from the lower tip of the spinal cord.
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/P/PNS.html   (904 words)

  
 HealthScout - Why Time Slows the Heart
Stratton's study is one of the few to focus on the role of the parasympathetic nervous system and how its regulation and the body's response to it change with age, she says.
The two branches of the autonomic nervous system, which control muscles in the heart and elsewhere, complement each other, with the sympathetic involved in the "fight-or-flight" response and the parasympathetic involved in relaxation.
What that means, in real life: If you see a thug in a dark alley, the sympathetic nervous system convinces you to run.
http://www.heartinfo.org/printerFriendly.asp?id=513504   (663 words)

  
 The Parasympathetic Nervous System
The sympathetic system, on the other hand, is more mature at birth, and this evolutionary strategy enables the organism to be shaped by its interaction with the environment, which is mediated by mobilization behavior of the SNS (Schore, 1994).
Little is available concerning this response in the trauma literature and differences between the faint and freeze response are incompletely understood.
The "faint" response is a defense strategy that is mediated by parasympathetic arousal.
http://www.veroniquemead.com/pns.php   (2042 words)

  
 Nervous system - Wikipedia, the free encyclopedia
The parasympathetic nervous system, on the other hand, is evident when a person is resting and feels relaxed, and is responsible for such things as the constriction of the pupil, the slowing of the heart, the dilation of the blood vessels, and the stimulation of the digestive and genitourinary systems.
The somatic nervous system is responsible for coordinating the body's movements, and also for receiving external stimuli.
For example, the human brain is part of the nervous system.
http://en.wikipedia.org/wiki/Nervous_system   (427 words)

  
 Articles About Tomatis and Movement Development - Sacarin Listening, Movement and Development Center
The upper parasympathetic nervous system division is responsible for all of the internal organs (beside the reproductive organs) having enough energy to maintain their health and vitality.
The functions of the sympathetic nervous system include constricting the blood vessels, tensing the musculature, speeding up the thinking process, etc. These changes occur not only when we are facing a danger or meeting an emergency, but also in more mundane situations, such as when we focus and concentrate upon our work.
From an energetic point-of-view, the sympathetic nervous system is concerned with energy expenditure, while the parasympathetic nervous system is concerned with energy restoration and conservation.
http://www.sacarin.com/code/lit02.php   (2734 words)

  
 THE HUMAN NERVOUS SYSTEM
The Peripheral Nervous System (PNS) is responsible for the body functions which are Not under conscious control - like the heartbeat or the digestive system.
There are 31 pairs of spinal nerves, part of the Peripheral Nervous system, that emerge from the spinal cord.
B. The Peripheral Nervous System (PNS) consists of the neurons NOT Included in the Brain and Spinal Cord.
http://www.sirinet.net/~jgjohnso/nervous.html   (3184 words)

  
 Introduction to Cardiovascular Pharmacology
The parasympathetic nervous system innervation of the cardiovascular system is essentially just the innervation of the heart by the vagus nerve.
Because the response of both reflexes are monitored by the baroreceptors, both reflex pathways are feedback loops.
A rise in mean arterial pressure causes an increase in baroreceptor neuronal activity and gives rise to an increase in vagal tone (activity of the vagus nerve) and a decrease in sympathetic tone.
http://lysine.pharm.utah.edu/netpharm/netpharm_00/notes/introcv.htm   (1929 words)

  
 Parasympathetic
Central control of the ANS The central nervous system controls the ANS from the cortex down through the brainstem and the spinal cord, but especially important is the hypothalamus, which is the integrator of autonomic function.
Although acknowledged to be important, very little attention has been given to what role the other arm of the ANS, the parasympathetic nervous system, plays in the stress response.
He reported that autistic children could be made to be more attentive and responsive to human stimulation by training with a toned system of listening exercises.
http://www.macses.ucsf.edu/Research/Allostatic/notebook/parasym.html   (2725 words)

  
 ACC Media, Journals & News - News Releases
And these two changes in the nervous control of the heart explain at least a part of the reason cardiac control declines with age,” said John R. Stratton, MD, FACC, at the Veterans Administration Puget Sound Health Care System and the University of Washington in Seattle.
The American College of Cardiology, a 29,000-member nonprofit professional medical society and teaching institution, is dedicated to fostering optimal cardiovascular care and disease prevention through professional education, promotion of research, leadership in the development of standards and guidelines, and the formulation of health care policy.
Phyllis K. Stein, PhD, at the Washington University School of Medicine in St. Louis, who was not part of the research team, said this study is an important step toward developing a balanced view of how the heart is controlled; a view that includes the parasympathetic nervous system, as well as the sympathetic nervous system.
http://www.acc.org/media/releases/highlights/2003/june03/slower.htm   (875 words)

  
 BBC Science & Nature - Human Body and Mind - Nervous System Layer
Your peripheral nervous system consists of 12 pairs of cranial nerves, which emerge from your brain and mainly serve your head and neck.
Your parasympathetic nervous system maintains and restores your energy.
It also contains 31 pairs of spinal nerves, which branch off from your spinal cord and supply the rest of your body.
http://www.bbc.co.uk/science/humanbody/body/factfiles/peripheralnervoussystem/peripheral_nervous_system.shtml   (350 words)

  
 The power of the parasympathetic nervous system
They tend to be mutually exclusive since one system is concerned with the mobilization of forces to meet an emergency (the famous 'fight or flight' response) while the other is to do with the relaxed, regenerative states.
Using highly sophisticated techniques and incredible discipline, devotees work toward strengthening and developing their Parasympathetics to such an extraordinary degree that all the systems and senses of the body become saturated with vitality and well-being.
It is always the power of the Parasympathetic that restores calm to the surface, harmony to the mad ups-and-downs of life.
http://www.isma.org.uk/stressnw/parasymp01.htm   (2635 words)

  
 Parasympathetic Nervous System Anatomy
The preganglionic neurons of the parasympathetic nervous system lie either in the brain or in the sacral spinal cord.
So, parasympathetic preganglionic neurons send their axons out either a cranial nerve or a sacral spinal nerve.
Obviously, in the sacral spinal cord, these preganglionic neurons send their axons out the sacral spinal nerves toward the parasympathetic ganglia.
http://distance.stcc.edu/AandP/AP/AP2pages/Units14to17/unit14/parasymp.htm   (272 words)

  
 The Limbic System
It also regulates the functioning of the parasympathetic and sympathetic nervous systems, which in turn means it regulates things like pulse, blood pressure, breathing, and arousal in response to emotional circumstances.
The first is the sympathetic nervous system, which starts in the spinal cord and travels to a variety of areas of the body.
It provides a pathway from the thalamus to the hippocampus, seems to be responsible for focusing attention on emotionally significant events, and for associating memories to smells and to pain.
http://www.ship.edu/~cgboeree/limbicsystem.html   (1475 words)

  
 The SPD Network - The STAR Center
According to study in 1997, about 10% of children are over or under responsive to sensory stimuli to the point that it interferes with their daily lives.
Children With Disturbances In Sensory Processing: A Pilot Study Examining The Role Of The Parasympathetic Nervous System
During the procedure, participants wear electrodes that conduct information about their heart reactivity and electrodermal responses (sweat).
http://www.spdnetwork.org/research/miller.para.html   (476 words)

  
 Neuroscience for Kids - Divisions of the NS
The somatic nervous system consists of peripheral nerve fibers that send sensory information to the central nervous system AND motor nerve fibers that project to skeletal muscle.
The cell body is located in either the brain or spinal cord and projects directly to a skeletal muscle.
The preganglionic neuron is located in either the brain or the spinal cord.
http://staff.washington.edu/chudler/nsdivide.html   (1183 words)

  
 Vet's Nervous System Damage
After plotting the subtle changes in heart function using a mathematical technique called spectral analysis, researchers found that parasympathetic brain function, which usually peaks during sleep, barely changed in veterans with Gulf War syndrome even though they appeared to be sleeping.
In the new study Haley and his colleagues used a technique that monitors changes in approximately 100,000 heartbeats over 24 hours and measures changes in high-frequency heart rate variability - a function solely regulated by the parasympathetic nervous system.
"They're sort of the mirror image of each other - the yin and the yang of the nervous system - that control functions we are not usually aware of.
http://www.military.com/NewsContent/0,13319,FL_vets_101504,00.html?ESRC=airforce.nl   (614 words)

  
 Para sympathetic N S
GI system - stimulated gastric motility, increases gastric tone, restores impaired peristaltic activity of esophagus, stomach and intestines.
http://www.marin.cc.ca.us/~zeller/234/234Day1.htm   (485 words)

  
 Sympathetic nervous system
The sympathetic nervous system has an active "pushing" function, the parasympathetic has mainly a relaxing function.
You can say that these systems work in balance with each other and directly or indirectly affect almost every structure in the body (e.g.
The sympathetic chain is located on both sides of the spine and consists of ganglias.
http://home.swipnet.se/sympatiska/nervous.htm   (289 words)

  
 The Autonomic Nervous System
Both systems have associated sensory fibers that send feedback information into the central nervous system regarding the functional condition of target tissues.
These integrated responses maintain the normal internal environment of the body in an equilibrium state called homeostasis.
The sympathetic nervous system normally functions to produce localized adjustments (such as sweating) and reflex adjustments of the cardiovascular system.
http://www.becomehealthynow.com/article/bodynervousadvanced/822   (1644 words)

  
 IPHY 3430 Human Physiology, University of Colorado at Boulder
The organization of the sympathetic and parasympathetic nervous system will be discussed with an emphasis on homeostasis.
What different pharmacological or physiological approaches (provide more than one possibility) might you employ to confirm your anatomical evidence?
Pharmacology and Physiology of the Autonomic Nervous System.
http://www.colorado.edu/kines/Class/IPHY3430-200/07pns2.html   (973 words)

  
 Autonomic Nervous System
Before examining this subsystem, you should be familiar with both the spinal cord and nerves and with the brain stem and cranial nerves.
Before examining this subsystem, you should be familiar with spinal cord structure and function.
These are the only ganglionic synapses in the nervous system.
http://sky.bsd.uchicago.edu/lcy_ref/synap/autonomic.html   (288 words)

  
 Autonomic Nervous System
The contents of the stellate ganglion are axons of preganglionic sympathetic neurons and bodies of postganglionic sympathetic neurons.
Contain axons of preganglionic sympathetic neurons, bodies of postganglionic sympathetic neurons, parasympathetic fibers from the vagus and/or sacral parasymtathetic fibers, and visceral afferent fibers
The cell bodies of post-ganglionic neurons are located in peripheral ganglia.
http://www-medlib.med.utah.edu/pain_center/education/outlines/ans.html   (309 words)

  
 BioCourse.com
Additional Activities for Integration and Coordination, Peripheral Nervous System, spinal nerves, cranial nerves, autonomic nervous system, sympathetic nervous system
Additional Activities for Integration and Coordination, Central Nervous System, spinal cord, CNS
Quiz on Integration and Coordination, Peripheral Nervous System, autonomic nervous system, nerves
http://www.biocourse.com/mhhe/bcc/domains/quad/topic.xsp?id=000344   (1312 words)

  
 Re: Ritalin Addiction
It can make your digestive system work harder, makeing you feel more hungry.
It can > make your digestive system work harder, > makeing you feel more hungry.
This is probably caused by stimulation of the ANS (autonomic nervous system).
http://www.rxlist.com/rxboard/ritalin.pl?noframes;read=526   (1338 words)

  
 Nervous System
The peripheral nervous system (PNS) - made up of the cranial and spinal nerves
Contains the centers for hunger, thirst, body temperature, water balance and blood pressure.
The autonomic nervous system, part of the PNS is made up of two divisions: the sympathetic and parasympathetic systems.
http://abbysenior.com/biology/nervous_system.htm   (1528 words)

  
 AUTONOMIC NERVOUS SYSTEM
Generally, the sympathetic system prepares the body for stressful/emergency situations and the para-sympathetic system reduces stress.
The ANS does not act on skeletal muscles, but its
(ANS) is a portion of the Peripheral Nervous System that controls many of the subconscious activities of the body, for example digestion and sweating.
http://www.biomed2.man.ac.uk/mahon/waugh/ans.htm   (111 words)

  
 The Autonomic Nervous System
This system is dominant when the individual is non-threatened and relaxed.
The activities of the PaNS tend to result in energy being conserved and stored.
http://www.jdaross.mcmail.com/Autonomic/ANS4.htm   (427 words)

  
 Physiological Arousal and Fear - Colonel Dave Grossman, Author
The parasympathetic nervous system is responsible for the body's digestive and recuperative processes.
Usually the body maintains itself in a state of homeostasis, which ensures that these two nervous systems maintain a balance between their demands upon the body's resources.
But, bad as they are, all of these stressors can be found in many cultural, geographic, or social circumstances, and when the ingredient of war is removed individuals exposed to these circumstances do not suffer mass psychiatric casualties.
http://www.killology.com/art_psych_arousal.htm   (778 words)

  
 Psychosomatic Medicine -- Collected Resources : Parasympathetic Nervous System
Effect of Autonomic Nervous System Manipulations on Gastric Myoelectrical Activity and Emotional Responses in Healthy Human Subjects
Psychosomatic Medicine -- Collected Resources : Parasympathetic Nervous System
http://www.psychosomaticmedicine.org/cgi/collection/parasymp_nervous_system?page=2   (158 words)

  
 Control of heart rate
Stratton practices at the Puget Sound Veterans Affairs Health Care System in Seattle.
Because parasympathetic withdrawal plays a role in physiological adaptation to exercise, this mechanism may limit exercise tolerance even when an elderly person has no evidence of structural heart disease.
The subjects received atropine to block the function of the parasympathetic nervous system.
http://depts.washington.edu/mednews/vol7/no21/heart.html   (227 words)

  
 Brain and Nervous System
As you grow and learn, messages travel from one neuron to another over and over, creating connections, or pathways, in the brain.
A part of the peripheral nervous system called the autonomic nervous system is responsible for controlling many of the body processes we almost never need to think about, like breathing, digestion, sweating, and shivering.
This information is then directed to other parts of the nervous system for further processing.
http://kidshealth.org/parent/general/body_basics/brain_nervous_system.html   (2635 words)

  
 GLOSSARY PQ
Part of the autonomic nervous system that controls heartbeat, respiration and other vital functions.
that reverses the effects of the sympathetic nervous system.
One of the classes of organic macromolecules that function as structural and control elements in living systems.
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookglossPQ.html   (3318 words)

  
 Dual innervation of white adipose tissue: some evidence for parasympathetic nervous system involvement -- Bartness 110 ...
system innervation of peripheral tissues is the rule, except
Central nervous system origins of the sympathetic nervous system outflow to white adipose tissue.
Indisputable confirmation of the parasympathetic nature of this
http://www.jci.org/cgi/content/full/110/9/1235   (1610 words)

  
 Anatomy & Physiology Study Questions
The effector pathway of the autonomic nervous system generally contains:
The parasympathetic nervous system affects all of these organs EXCEPT:
http://www.gwc.maricopa.edu/class/bio201/jcastu57.htm   (268 words)

  
 The Autonomic Nervous System (page 1)
Simple reflexes are completed entirely within the organ concerned, whereas more complex reflexes are controlled by the higher autonomic centres in the CNS, principally the hypothalamus.
The ANS is predominantly an efferent system transmitting impulses from the Central Nervous System (CNS) to peripheral organ systems.
The nervous system is divided into the somatic nervous system which controls organs under voluntary control (mainly muscles) and the Autonomic Nervous System (ANS) which regulates individual organ function and homeostasis, and for the most part is not subject to voluntary control.
http://www.nda.ox.ac.uk/wfsa/html/u05/u05_010.htm   (879 words)

  
 Sympathetic vs. Parasympathetic
can leave the central nervous system in thoracic spinal nerves
Which of these responses is stimulated by the parasympathetic nervous system?
Which of these responses is stimulated by the sympathetic nervous system?
http://www.siumed.edu/~dwade/phys310/Sympvsparasymp.html   (373 words)

  
 The Peripheral Nervous System
The sympathetic nervous system is responsible for the flight-or-fight response.
The autonomic nervous system is part of the peripheral nervous system.
The nerve fibers of the parasympathetic nervous system are called the cranial nerves.
http://www.marymount.k12.ny.us/marynet/Studentwebwork01/SpinalCordandPNS/HTML/autonomic.htm   (185 words)

  
 Parasympathetic nervous system dysfunction in primary Sjogren's syndrome -- Hocevar et al. 62 (8): 702 -- Annals of the ...
Autonomic nervous system dysfunction may be an unrecognised
Parasympathetic nervous system dysfunction in primary Sjögren’s syndrome
Involvement of peripheral nervous system in primary Sjögren’s syndrome.
http://ard.bmjjournals.com/cgi/content/full/62/8/702   (2197 words)

  
 parasympathetic nervous system
neostigmine - neostigmine, drug used to mimic the effects of stimulation of the parasympathetic nervous system.
nervous system - nervous system, network of specialized tissue that controls actions and reactions of the body and...
Related content from HighBeam Research on: parasympathetic nervous system
http://www.infoplease.com/ce6/sci/A0917188.html   (111 words)

  
 parasympathetic nervous system
craniosacral division of the autonomic nervous system; generally acts to conserve resources and restore homeostasis, often with effects reciprocal to the sympathetic nervous system; cell bodies of the parasympathetic preganglionic fibers are in brain stem nuclei and in the sacral spinal cord; they synapse in cranial autonomic ganglia or in terminal ganglia near target organs.
http://crisp.cit.nih.gov/Thesaurus/00006035.htm   (55 words)

  
 Autonomic Nervous System
The onset of disease in old age, such as diabetes, stroke and Parkinson's disease, as well as medications used to treat them, may have other adverse effects in the ANS that are obvious in the cardiovascular system.
The autonomic nervous system (ANS) is a regulatory structure that helps people adapt to changes in their environment.
The ANS acts through a balance of its two components, the sympathetic nervous system and parasympathetic nervous system.
http://www.americanheart.org/presenter.jhtml?identifier=4463   (436 words)

  
 System, parasympathetic nervous definition - Medical Dictionary definitions of popular medical terms
System, parasympathetic nervous: A part of nervous system that slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles.
System, parasympathetic nervous definition - Medical Dictionary definitions of popular medical terms
The parasympathetic nervous system together with the sympathetic nervous system (that accelerates the heart rate, constricts blood vessels, and raises blood pressure) constitute the autonomic nervous system.
http://www.medterms.com/script/main/art.asp?articlekey=5691   (176 words)

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