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| | Nervous System |
 | | Somatic motor and somatic sensory fibers are present in the dorsal and ventral rami of the spinal nerves and in the cranial nerves. | | | The peripheral nervous system can be divided on the basis of anatomic regions into cranial nerves and spinal nerves or on the basis of function into somatic and visceral components or into sensory and motor components. | | | The central nervous system consists of the brain and spinal cord. |
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http://www.lander.edu/rsfox/112nerve.htm
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| | Somatic nervous system |
| | Often called the voluntary nervous system, the somatic system includes many involuntary functions such as sensations and reflex movements. |
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http://campus.houghton.edu/orgs/psychology/physio2/sld005.htm
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| | Encyclopedia of Nursing and Allied Health: Nervous system, somatic |
| | Somatic nervous system diseases are diseases of the peripheral nerves that are external to the brain and spinal cord. | | | The major function of the SNS is the voluntary control of the muscle system of the body and the processing of sensory information to the CNS. | | | Additional input is provided by the somatic senses, which are pain, temperature, and pressure. |
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http://www.findarticles.com/p/articles/mi_gGENH/is_/ai_2699003538
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| | Nervous System Information |
| | Spinal reflexes are somatic reflexes mediated by the spinal cord. | | | As a key homeostatic regulatory and coordinating system, it detects, interprets, and responds to changes in internal and external conditions. | | | This system controls movements of skeletal (voluntary) muscles. |
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http://www.besthealth.com/besthealth/bodyguide/reftext/html/nerv_sys_fin.html
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| | WellnessWatch.net:The Nervous System |
| | The nervous system is the communications center for the body, thus controlling movement, emotions and thought throughout each of the various systems of the body. | | | Because of this essential role with communication, the health of the nervous system is vitally important to the subsequent health of the entire body. | | | The first is the central nervous system, which is comprised of the brain and spinal cord. |
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http://www.wellnesswatch.net/indepth/nervoussystem.html
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| | Psych 150 - The Somatic Nervous System |
| | The somatic system is generally associated with all body movement. | | | The somatic nervous system controls all voluntary systems within the body with the exception of reflex arcs (see below). | | | Certain stimuli, such as touching a hot surface, cause a reflex arc to trigger where the nerve impulse travels up the afferent nerve, through an interneuron in the spine, and down the appropriate efferent nerves necessary to jerk the hand away from the hot surface. |
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http://normandy.sandhills.cc.nc.us/psy150/somatic.html
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| | Nervous System |
| | 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. | | | The fibres of the parasympathetic system are found in some cranial nerves and in the sacral 2,3,4 spinal nerves. |
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http://www.geocities.com/CapeCanaveral/Launchpad/5172/nervous.html
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| | Maturana (1970): Biology of Cognition |
| | Since the nervous system is continuously changing through experience, what occurs when the observer sees a given behavior reenacted is a sequence of interactions that satisfy this subordination independently of the neuronal process which generated them. | | | Yet, what modifies the nervous system of the observed organism are the changes in activity of the nerve cells associated with the sensing elements, changes that henceforth constitute an embodiment of the relations that arise through the interaction. | | | Each component of the nervous system that the observer describes is defined in the domain of interactions of his observations, and as such is alien to the system which it is supposed to integrate. |
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http://www.enolagaia.com/M70-80BoC.html
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| | Nervous System |
| | The peripheral nervous system includes all nerves not in the brain or spinal cord and connects all parts of the body to the central nervous system. | | | The drug side effect is to generally lower all activities in the parasympathetic system with consequent dominance of the sympathetic system. | | | Adrenergic nerves are part of the postganglionic sympathetic nerve system** and parts of the central nervous system. |
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http://www.elmhurst.edu/~chm/vchembook/661nervoussys.html
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| | [No title] |
| | The parasympathetic nervous system, on the other hand, is generally thought of as "vegetative", being concerned with the body's recovery from exertion, or active when the body is in its resting state. | | | Somatic components of spinal nerves mediate skin sensation and proprioception (position sense) for the body wall and limbs, as well as motor innervation to skeletal (striated or "voluntary") muscle. | | | As with somatic sensory neurons, the cell body of a visceral sensory neuron sits in a dorsal root ganglion and the central process of the sensory axon passes to the spinal cord by way of a dorsal root. |
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http://www.emory.edu/ANATOMY/AnatomyManual/nervous_system.html
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| | The ANS |
| | 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 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 medulla, pons and hypothalamus). | | | The afferent nerves subserving 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. |
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http://www.ndrf.org/ans.htm
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| | 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. | | | It is responsible for monitoring conditions in the internal environment and bringing about appropriate changes in them. |
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http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/P/PNS.html
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| | Somatic nervous system - Wikipedia, the free encyclopedia |
| | 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 also reception of external stimuli. | | | The somatic nervous system consists of afferent fibers that receive information from external sources, and efferent fibers that are responsible for muscle contraction. | | | The first is the upper motor neuron, whose cell body is located in the precentral gyrus (Brodman Area 4) of the brain. |
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http://en.wikipedia.org/wiki/Somatic_nervous_system
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| | the nervous system |
| | Receptors are parts of the nervous system that sense changes in the internal or external environments. | | | Input to the nervous system is in the form of our five senses: pain, vision, taste, smell, and hearing. | | | The autonomic system controls muscles in the heart, the smooth muscle in internal organs such as the intestine, bladder, and uterus. |
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http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookNERV.html
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| | Somatic Nervous System - Back Pain - Anatomy |
| | sciatica a condition which occurs when the sciatic nerve (part of the somatic system) is compressed. | | | The diagram (opposite) maps the exit points of the main, somatic, spinal nerves to the different parts of the body. | | | However, the brain finds it difficult to determine whether the pain is coming from the nerve root, or from the main segment that extends into the leg – as a result, the pain is sometimes perceived as originating in the foot, leg or buttocks – a condition referred to as |
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http://www.backrack.co.uk/somatic.shtml
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| | nervous system |
| | This is the rest and rejuvenation nervous system, and massage increases its activity. | | | This may be part of the power of Cranial sacral therapy and energy work that has one hand at the top of the neck, and the other on the sacrum. | | | The sympathetic and the parasympathetic systems work in conjunction with each other to balance the body's needs. |
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http://www.deeptissue.com/learn/systems/nerve/autonom.htm
(313 words)
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| | 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. |
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http://www.sirinet.net/~jgjohnso/nervous.html
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| | Chapter 46: Neurons, Nervous System and Brain |
| | System is "housekeeper system"; it promotes internal responses resulting in a relaxed state. | | | Central nervous system (spinal cord and brain) is where nerve impulses are interpreted. | | | 2) Peripheral nervous system consists of cranial and spinal nerves. |
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http://www.sirinet.net/~jgjohnso/apbio46.html
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| | Welcome to International Sports Sciences Association Certified Fitness Trainer ONLINE |
| | These are the functions of the nervous system while it acts in an integrated manner with other body systems. | | | Let’s take a quick look at how the nervous system is arranged, and then see how we can apply that knowledge in terms of improving upon our efforts in training. | | | The central nervous system includes the brain and the spinal cord. |
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http://www.issaonline.com/trial/unit1/1unit28.html
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| | MCB 32 Introductory Human Physiology |
| | An extrapyramidal system of neurons, arising from the cerebellum and other structures in the brain, monitors the activity of the pyramidal system and coordinates overall muscle movement so that it is smooth and well-directed. | | | Although the pyramidal motor system is responsible for innervating muscle groups, other motor neurons also contribute to control of muscle movement. | | | But that information is not necessary for reflex withdrawal of the injured leg, which is controlled entirely at the level of the spinal cord; the reflex occurs even when the spinal cord is severed. |
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http://mcb.berkeley.edu/courses/mcb32/mcb32notes/kruger7.html
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| | Ch. 13 - The Central Nervous System |
| | The limbic system functions in emotional aspects of behavior related to survival and memory; it is also associated with pleasure and pain. | | | Outer endosteal layer fused to the periosteum of the cranial bones | | | The mammillary bodies in the floor of the hypothalamus are also part of the limbic system and control reflex movements associated with eating (chewing, licking, swallowing, etc.) |
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http://main.uab.edu/show.asp?durki=8931
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| | Neuroscience for Kids - Autonomic Nervous System |
| | The ANS is part of the peripheral nervous system and it controls many organs and muscles within the body. | | | Notice in the picture on the left that the sympathetic nervous system originates in the spinal cord. | | | Notice in the picture on the left, that the cell bodies of the parasympathetic nervous system are located in the spinal cord (sacral region) and in the |
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http://faculty.washington.edu/chudler/auto.html
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| | Parasympathetic Nervous System |
| | 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. | | | This ganglion also receives the preganglion Edinger-Westphal axons, and the postsynaptic fibers of this pathway are referred on to their innervation of smooth intrisic muscles of the eye. | | | The general opinion is that there are no specialized sensory receptors in the genital organs involved with sexual excitation and gratification, but the unique sensory response leaves this question open. |
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http://sky.bsd.uchicago.edu/lcy_ref/synap/parasympathetic.html
(1934 words)
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| | Neural Integration I Sensory Pathways & Somatic Nervous System |
| | Two kinds of pain are recognized in the parietal lobe of the cortex: somatic (superficial and deep) and visceral; visceral pain, unlike somatic pain, is usually felt in or just under the skin that overlies the stimulated organ. | | | Phantom pain is the sensation of pain in a limb that has been amputated; the brain interprets nerve impulses arising in the remaining proximal portions of the sensory nerves as coming from the nonexistent (phantom) limb. | | | The degree of representation is proportional to the number of motor units in a particular muscle of the body. |
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http://www.qcc.cuny.edu/BiologicalSciences/Faculty/cambronero/AP/page17.html
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| | 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. |
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http://faculty.washington.edu/chudler/nsdivide.html
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| | The Autonomic Nervous System |
| | In the somatic nervous system, GSE leave the ventral horn, pass along the ventral rootlets, and directly join the trunk of the spinal nerve. | | | The afferent fibers of the autonomic nervous system can leave from their targeted organ, pass along the same spinal nerve (or branch) that brought the GVE to that same organ, pass through the dorsal root ganglion, and return through the dorsal horn of the spinal cord. | | | I’m not sure if it’s test material or not, but Dr. Azzam was pretty emphatic about their being no pain receptors in the intestines, but rather stretch receptors that make us feel “rotten!” when stimulated. |
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http://www.georgetown.edu/users/rgk8/neuronr11.htm
(1968 words)
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| | Spinal Cord and Cranial Nerves |
| | Directions in the nervous system are described relative to the neuraxis, an imaginary line drawn through the spinal cord up to the front of the brain (see Figures 1 and 2). | | | Sensory systems include pain and temperature, light touch, and proprioception (the ability to know the position of one's body parts with the eyes closed). | | | Any nerves which exit the bones of the CNS (spinal nerves and cranial nerves) are considered part of the peripheral nervous system (PNS). |
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http://nanonline.org/nandistance/nanneuro/modules/cranial/cranial.html
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| | The Nervous System - Lecture Notes |
| | Therefore an understanding of this system is essential to an understanding of human psychology. | | | All of the psychological phenomena covered in this course are a direct product of these biological process. | | | The Peripheral Nervous system - everything else - consists of nerves |
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http://www.usu.edu/psycho101/lectures/chp5nervous/nervous.htm
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| | Comparison of ANS and Somatic NS |
| | CNS is the Central Nervous System comprising the Brain and the Spinal Cord. | | | However it is important to remember that they all form part of an integrated whole and that both the SyNS and the PaNS are operating continuously along with the rest of the nervous system. | | | The system prepares the body for dealing with threatening situations by providing what is known as the |
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http://greenfield.fortunecity.com/rattler/46/ans2.htm
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| | Peripheral Nervous System; Efferent Division |
| | Motor neurons are considered to be the common pathway for motor control since the only way any other part of the nervous system can influence skeletal muscle activity is by acting on these motor neurons. | | | origin of preganglionic fibers is the brain and sacral region of spinal cord; parasympathetic nervous system | | | Sympathetic nerve fibers originate in the thoracic and sacral regions of the spinal cord. |
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http://www2.mtroyal.ab.ca/~khoehn/3361/pnseff/pnseffmn.htm
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| | Nervous System |
| | The vertebrate nervous system is composed of the brain, spinal cord, and the peripheral nerves attached to the spinal cord, which is in turn attached to the medulla at the base of the brain. | | | The limbic system consists of the hippocampus and amygdala which are responsible for emotional responses. | | | The autonomic nervous system controls gland secretion and involuntary muscle control in the body. |
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http://www.ufrsd.net/ahs/Studacts/APBIO/HUMSYS/NRV/NRV.HTM
(1136 words)
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| | Nervous System |
| | nMade up of nerves that connect to voluntary skeletal muscles and to sensory receptors
nAfferent Nerve Fibers: axons that carry info inward to the central nervous system from the periphery of the body
nEfferent Nerve Fibers: axons that carry info outward from the central nervous system to the periphery of the body |
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http://www.wright.edu/~latham.5/index_files/slide0010.htm
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| | Dorlands Medical Dictionary |
| | the system of body structures, principally the carotid body, the aortic bodies, and the glomus jugulare, that respond to variations in oxygen tension and carbon dioxide tension of the blood and may play a role in the regulation of respiration. | | | (CNS) that portion of the nervous system consisting of the brain and spinal cord. | | | the portion of the nervous system concerned with regulation of the activity of cardiac muscle, smooth muscle, and glands; usually restricted to the two visceral efferent peripheral components, the sympathetic nervous system and the parasympathetic nervous system. |
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http://www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_s_33zPzhtm
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| | The Peripheral Nervous System |
| | The central nervous system consists of the brain and a spinal cord that extends down the dorsal part of the body. | | | From these various structures, messages are sent to the brain by way of the spinal cord. | | | Together, the central nervous system and the peripheral nervous system make rapid changes in your body in response to stimuli in your environment. |
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http://www.marymount.k12.ny.us/marynet/Studentwebwork01/SpinalCordandPNS/HTML/peripheral.htm
(147 words)
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| | 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. |
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http://www.becomehealthynow.com/article/bodynervousadvanced/822
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| | 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. |
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http://www.colorado.edu/epob/epob1220lynch/07pns2.html
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| | AP~Animal Nervous System and Senses |
| | Compare ;and contrast the nervous systems of the following invertebrates and explain how variation in design and complexity correlate with phylogeny, natural history, and habitat: | | | Explain how the mammalian ear functions to maintain body balance and equilibrium | | | Diverse body movements require variation in muscle activity |
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http://www.jdenuno.com/APBiology/AP%7EAnNerve.htm
(893 words)
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| | somatic nervous system. The New Dictionary of Cultural Literacy, Third Edition. 2002 |
| | -ik) The part of the nervous system that controls voluntary movements in the body, such as those performed by the skeletal muscles (see muscular system). | | | The somatic nervous system also includes the special nerve fibers that help keep the body in touch with its surroundings, such as those involved in touch, hearing, and sight. |
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http://www.bartleby.com/59/22/somaticnervo.html
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| | THE AUTONOMIC NERVOUS SYSTEM |
| | We do not consciously direct the rate of our heart beating nor are we normally aware of the diameter of our blood vessels or the need to stimulate our salivary glands to produce saliva. | | | This includes the spinal cord, the brain stem and the hypothalamus. | | | The hypothalamus is probably the most important area of the brain involved with the ANS but other areas such as the medulla oblongata and parts of the limbic system of the cerebral cortex have an important part to play. |
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http://www.jdaross.mcmail.com/Autonomic/ANS.htm
(618 words)
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| | Nervous System / Organization of the Nervous System |
| | Because they are so vitally important, the brain and spinal cord, located in the dorsal body cavity, are encased in bone for protection. | | | The organs of the peripheral nervous system are the nerves and ganglia. | | | The brain and spinal cord are the organs of the central nervous system. |
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http://training.seer.cancer.gov/module_anatomy/unit5_3_nerve_org.html
(380 words)
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| | THE PERIPHERAL NERVOUS SYSTEM |
| | The first acts primarily to arouse the body; the second, to relax and restore the body to normal levels of arousal. | | | 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. | | | he second major division of the nervous system, the peripheral nervous system, carries messages to and from the central nervous system. |
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http://cwx.prenhall.com/bookbind/pubbooks/morris2/chapter2/medialib/summary/10.html
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| | MSN Encarta - Dictionary - somatic nervous system definition |
| | nervous system serving sense organs: the part of the nervous system that serves the sense organs and muscles of the body wall and limbs, and brings about voluntary muscle activity. | | | MSN Encarta - Dictionary - somatic nervous system definition | | | Search for "somatic nervous system" in all of MSN Encarta |
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http://ca.encarta.msn.com/dictionary_1861710286_1861710298/nextpage.html
(95 words)
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| | nervsys_autonomic |
| | Control by medulla, pons, hypothalamus; those regions are influenced by cerebral cortex (conscious thought) and limbic system (emotions). | | | Only 2 neurotransmtrs in peripheral nervous system: ACh and norepinephrine. | | | Also found on target of somatic motor neurons: skeletal muscle. |
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http://www.udel.edu/Biology/rosewc/B276/nervsys_autonomic.html
(252 words)
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| | Human Nervous System |
| | Sensory ganglia contain neuron cell bodies that are responsive to touch, pressure, pain, and temperature, for example. | | | The nervous system can also be divided into the somatic nervous system and the autonomic nervous system. | | | Somatic Nervous System (SNS) and Autonomic Nervous System (ANS) |
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http://ext.sac.edu/faculty_staff/mansfield_patricia/7intro.html
(441 words)
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| | 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. |
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http://www.nda.ox.ac.uk/wfsa/html/u05/u05_010.htm
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| | The Autonomic Nervous System |
| | • Notice that the ANS pathway is a 2 neuron pathway while the Somatic NS only contains one neuron. | | | Dominance by the sympathetic system is caused by physical or emotional stress -- “E situations” | | | • Somatic nervous system – consciously perceived sensations – excitation of skeletal muscle – one neuron connects CNS to organ • Autonomic nervous system – unconsciously perceived visceral sensations – involuntary inhibition or excitation of smooth muscle, cardiac muscle or glandular secretion – two neurons needed to connect CNS to organ |
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http://microvet.arizona.edu/Courses/VSC401/autonomicNervous.html
(640 words)
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| | Nervous System |
| | The sympathetic responses are FIGHT OR FLIGHT RESPONSES. | | | The cell bodies of the neurons of the SOMATIC NERVOUS SYSTEM are located in the CNS. | | | The neuron is the fundamental unit of the nervous system; however, |
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http://zoology.muohio.edu/claussen/nervoussystem.html
(1580 words)
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| | Nervous system |
| | § Afferent sensory fibers from peripheral nervous system. | | | Schizophrenia may be an increase in dopamine release and axons. | | | · Structural and functional center of the entire nervous system. |
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http://www.docrevello.com/NervousSystem.htm
(1941 words)
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