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Topic: Somatic nervous system


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  Nervous System...MedicalGeo.com
The somatic nervous system is the voluntary part of the nervous system that coordinates a body's movements, such as maintaining a particular posture and walking.
The sympathetic nervous system responds to impending danger or stress, and is responsible for the increase of one's heartbeat and blood pressure, among other physiological changes, along with the sense of excitement he feels.
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 geniturinary systems.
www.medicalgeo.com /nervoussystem.html   (524 words)

  
 Cerebral palsy nervous system
Nervous system consists of central nervous system and peripheral nervous system.
This nervous system is divided in to somatic nervous system and autonomic nervous system.
Cerebral palsy is a disorder of nervous system.
www.cerebralpalsytreating.com /cerebral-palsy-nervous-system.html   (395 words)

  
 Neuroscience For Kids - Explore the nervous system
The peripheral nervous system is divided into two major parts: the somatic nervous system and the autonomic nervous system.
The autonomic nervous system is divided into three parts: the sympathetic nervous system, the parasympathetic nervous system and the enteric nervous system.
The enteric nervous system is a meshwork of nerve fibers that innervate the viscera (gastrointestinal tract, pancreas, gall bladder).
faculty.washington.edu /chudler/nsdivide.html   (1209 words)

  
 the nervous system
Nervous tissue is composed of two main cell types: neurons and glial cells.
The nervous system coordinates rapid responses to external stimuli.
The Peripheral Nervous System (PNS) connects the CNS to other parts of the body, and is composed of nerves (bundles of neurons).
www.emc.maricopa.edu /faculty/farabee/biobk/BioBookNERV.html   (3645 words)

  
 THE PERIPHERAL NERVOUS SYSTEM   (Site not responding. Last check: 2007-10-26)
he second major division of the nervous system, the peripheral nervous system, carries messages to and from the central nervous system.
is composed of the sensory (afferent) neurons that carry messages to the central nervous system and the motor (efferent) neurons that carry messages from the central nervous system to the skeletal muscles of the body.
The sympathetic and parasympathetic divisions of the autonomic nervous system.
cwx.prenhall.com /bookbind/pubbooks/morris2/chapter2/medialib/summary/10.html   (131 words)

  
 Nervous System / Organization of the Nervous System / PNS
The peripheral nervous system is further subdivided into the somatic nervous system and the autonomic nervous system.
The somatic nervous system consists of nerves that go to the skin and muscles and is involved in conscious activities.
The autonomic nervous system consists of nerves that connect the CNS to the visceral organs such as the heart, stomach, and intestines.
training.seer.cancer.gov /module_anatomy/unit5_3_nerve_org2_pns.html   (681 words)

  
 Nervous System
The nervous system's jobs are to protect your body from harm, notify your body when fuel is needed, maintain balance in most situaions, shut itself down in times of rest, and adapt to the abuses and injuries you have recieved in your own lifetime.
The somatic nervous system is responsible for the voluntary control of skeletal muscle and for the collection of sensory information from the body.
The somatic nerves of the body are divided according to which part of the central nervous system they are connected.
www.geocities.com /CapeCanaveral/Launchpad/5172/nervous.html   (1371 words)

  
 Nervous System / Organization of the Nervous System
Although each subdivision of the system is also called a "nervous system," all of these smaller systems belong to the single, highly integrated nervous system.
The nervous system as a whole is divided into two subdivisions: the central nervous system (CNS) and the peripheral nervous system (PNS).
The organs of the peripheral nervous system are the nerves and ganglia.
training.seer.cancer.gov /module_anatomy/unit5_3_nerve_org.html   (380 words)

  
 The Somatic Nervous System   (Site not responding. Last check: 2007-10-26)
The Somatic Nervous System consists of all the spinal nerves that innervate the skin, joints, and muscles that are under voluntary control.
Somatic sensory axons receive information for skin receptors for temperature, touch, pain, and proprioception and enter the spinal cord in the dorsal root ganglia.
Somatic motor axons are derived from the ventral root of the spinal cord, and control muscle contraction.
www.ualberta.ca /~neuro/OnlineIntro/somatic.htm   (63 words)

  
 Nervous System
The nervous system too, is composed of organs, principally the brain, spinal cord, nerves, and ganglia.
The function of the nervous system is critical for every day living and functioning, therefore it is imperative you are familiar with the possible signs and symptoms that could signify injury or dysfunction of any part of this system.
It is the "conducting" cell that transmits impulses and the structural unit of the nervous system.
www.ambulancetechnicianstudy.co.uk /nervsystem.html   (1240 words)

  
 Autonomic nervous system Summary
The autonomic nervous system (ANS) is the part of the nervous system of the higher life forms that is not consciously controlled.
A third and less commonly considered part of the autonomic nervous system is the enteric nervous system, which controls the digestive organs, and is, for the most part, independent of central nervous system (CNS) input.
In general, the parasympathetic nervous system is involved with digestion and energy conservation, while the sympathetic nervous system is involved with energy expenditure and the 'fight or flight' response.
www.bookrags.com /Autonomic_nervous_system   (3681 words)

  
 Peripheral Nervous System Information on Healthline
The peripheral nervous system is composed of nerve fibers that provide the cellular pathways for the various signals on which the proper operation of the nervous system relies.
The sensory nervous system comprises 12 pairs of cranial nerves and 31 pairs of spinal nerves.
The autonomic nervous system (ANS) consists of three subsystems: the sympathetic nervous system, the parasympathetic nervous system, and the enteric nervous system.
www.healthline.com /galecontent/peripheral-nervous-system   (679 words)

  
 Brain and Behavior (IPHY 3730), University of Colorado at Boulder
The ANS is further subdivided into the sympathetic and parasynpathetic nervous systems, both of which are involved in integration of involuntary physiological processes, such as control of heart rate.
Outline the neuronal characteristics of the sympathetic and parasympathetic nervous systems with regard to: 1) number of neurons involved, 2) location of the ganglion, and 3) anatomical origin of the system.
Pharmacology and Physiology of the Autonomic Nervous System.
www.colorado.edu /kines/Class/IPHY3730/09motorsystems.html   (1982 words)

  
 The Autonomic Nervous System
The autonomic system is usually defined as a motor system that innervates three major types of tissue: cardiac muscle, smooth muscle, and glands.
A third division of the autonomic system, termed the enteric nervous system, consists of a collection of neurons embedded within the wall of the entire gastrointestinal tract and its derivatives.
This is characterized by the release of large quantities of epinephrine from the adrenal gland, an increase in heart rate, an increase in cardiac output, skeletal muscle vasodilation, cutaneous and gastrointestinal vasoconstriction, pupillary dilation, bronchial dilation, and piloerection.
www.becomehealthynow.com /article/bodynervousadvanced/822   (1644 words)

  
 Nervous System
The nervous system is composed of all nerve tissues in the body.
The somatic nervous system controls functions that are under conscious voluntary control such as skeletal muscles and sensory neurons of the skin.
Cholinergic nerves are part of the parasympathetic system, somatic motor nerves, preganglionic sympathetic nerves* and central nervous system.
www.elmhurst.edu /~chm/vchembook/661nervoussys.html   (889 words)

  
 Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal   (Site not responding. Last check: 2007-10-26)
The somatic nervous system is that part of the peripheral nervous system associated with the voluntary control of body movements through the action of skeletal muscles, and with reception of external stimuli, which helps keep the body in touch with its surroundings (e.g., touch, hearing, and sight).
The somatic nervous system processes sensory information and controls all voluntary muscular systems within the body, with the exception of reflex arcs.
The basic route of nerve signals within the efferent somatic nervous system involves a sequence that begins in the upper cell bodies of motor neurons (upper motor neurons) within the precentral gyrus (which approximates the primary motor cortex).
www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=somatic_nervous_system   (413 words)

  
 La Tercera::Icarito - Somatic nervous system   (Site not responding. Last check: 2007-10-26)
This system is in charge of gathering and transmitting the information detected by the senses, and also of sending instructions that allow the voluntary movement of the muscles.
The somatic nervous system (SNS) is made up of sensory neurons that carry information (for instance, pain) from the sensory receptors (of the senses: skin, eyes, etc.) -mainly located in the head, body surface and limbs- to the central nervous system (CNS).
Thus, the somatic nervous system has two canals: one as an entry, where the information is received (through somatic sensory or somatic afferent canals), which is related with temperature, pain, touch, pressure and space senses (sight, hearing, taste and smell) and also, the proprioception, which corresponds to the information gathered at the muscles and tendons.
icarito.latercera.cl /medio/articulo/0,0,38035857__261991269__1,00.html   (492 words)

  
 What is the Peripheral Nervous System?
The peripheral nervous system (PNS) is one of the two main parts of the body’s nervous system.
The peripheral nervous system branches outside of the central nervous system and is comprised of nerves and neurons that transmit information to and from the brain.
It is also the part of the nervous system that regulates internal processes such as increased and decreased heart rates as a response to stimuli, secretion of digestive fluids, and the body’s reaction to stress.
www.wisegeek.com /what-is-the-peripheral-nervous-system.htm   (384 words)

  
 The Peripheral Nervous System   (Site not responding. Last check: 2007-10-26)
The nervous system consists of both the central and peripheral nervous system.
The peripheral nervous system connects the central nervous system to various structures of the body.
The cluster of neurons outside of the central nervous system is called a ganglion.
www.marymount.k12.ny.us /marynet/Studentwebwork01/SpinalCordandPNS/HTML/peripheral.htm   (147 words)

  
 Human 3D Human nervous system diagram - human body nervous system
The somatic nervous system consists of neurons which carry impulses from the senses to the CNS and impulses from the CNS to the horizontal muscles.
This part of the nervous system is therefore called the autonomous nervous system.
Within the somatic nervous system there are the motor nerves and the sensory nerves.
www.contmediausa.com /shop/app/products/Human3D/human3dnervoussystem.html   (337 words)

  
 The Nervous System - Design, Workings, Ailments, Taking care
Although one of the smallest of the body's systems in terms of weight, the nervous system is the most complex and versatile.
Substance P is important in the interaction between the nervous system and the lymphatic system (which governs body immunity) and seems to play a role in inflammation in the body.
The neurons for this system originate in the brain stem and in the lower region of the spinal cord.
www.faqs.org /health/Body-by-Design-V2/The-Nervous-System.html   (10192 words)

  
 Divisions of the Nervous System and the Brain
The Autonomic Nervous System is that part of PNS consisting of motor neurons that control internal organs The autonomic system controls muscles in the heart, the smooth muscle in internal organs such as the intestine, bladder, and uterus.
The Sympathetic Nervous System is involved in the fight or flight response.
Neurotransmitter substance released on stimulation of the parasympathetic nervous system is Acetylcholine.
www.angelfire.com /sc/mrcomeau/nervous2notes.html   (1324 words)

  
 Peripheral nervous system Summary
The peripheral nervous system (PNS) is one component of the overall nervous system network in the human body.
The autonomic nervous system is the gateway between the internal environment and the central nervous system.
The peripheral nervous system is divided into the somatic nervous system and the autonomic nervous system.
www.bookrags.com /Peripheral_nervous_system   (1766 words)

  
 The Nervous Systems
While the brain and the spinal cord constitute the central nervous system, the so-called cranial- and spinal nerves form parts of the peripheral.
The peripheral nerves connect the central nervous system with the sense organs, i.e.
The nervous system can of course be divided into additional subdivisions, but we will stick to this gross classification for now.
www.hubin.org /facts/brain/texts/nervous_systems_en.html   (816 words)

  
 Chapter 3: Peripheral Nervous System
The somatic nervous system includes the sensory and motor nerves that innervate the limbs and body wall.
The autonomic nervous system consists of two main divisions, the sympathetic and the parasympathetic nervous systems.
The parasympathetic nervous system is involved in energy conservation functions and increases gastrointestinal motility and secretion.
www.dartmouth.edu /~rswenson/NeuroSci/chapter_3.html   (2010 words)

  
 Parasympathetic Nervous System Facts   (Site not responding. Last check: 2007-10-26)
The autonomic nervous system is responsible for involuntary activation of the viscera (organs, smooth and cardiac muscle, glands).
The autonomic nervous system consists of the sympathetic and the parasympathetic divisions.
Neurons in the somatic nervous system are continuous from their origins in the spinal cord to their termination at the skeletal muscle.
faculty.ccri.edu /pmoberg/peripheral_nervous_system_facts.htm   (645 words)

  
 Nervous System Information - Washington, DC
As the most complex system, the nervous system serves as the body control center and communications electrical-chemical wiring network.
The nervous system integrates countless bits of information and generates appropriate reactions by sending electrochemical impulses through nerves to effector organs such as muscles and glands.
Reflexes are either somatic (resulting in contraction of skeletal muscle) or autonomic (activation of smooth and cardiac muscle).
www.georgetownuniversityhospital.org /body.cfm?id=555563&action=articleDetail&AEProductID=Adam_BGuide&AEArticleID=31   (2354 words)

  
 Nervous system - Better Health Channel.
Nerves connect the brain and spinal cord to the peripheral nervous system, which is what nerve tissue outside of the central nervous system is called.
The somatic nervous system is also a part of the peripheral nervous system.
The nervous system uses electrical and chemical means to help all parts of the body to communicate with each other.
www.betterhealth.vic.gov.au /bhcv2/bhcarticles.nsf/pages/Nervous_system?OpenDocument   (718 words)

  
 somatic nervous system - General Practice Notebook   (Site not responding. Last check: 2007-10-26)
The somatic nervous system describes a broad range and distribution of neurones which are involved with the innervation of skeletal muscle, connective tissue and skin.
A general theme of the somatic nervous system is interaction with the environment.
The somatic nervous system must be contrasted with the autonomic nervous system.
www.gpnotebook.co.uk /cache/1630863420.htm   (167 words)

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