what is the function of the central nervous system?
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Its overall function is to collect information about the external conditions in relation to the body's internal state, to analyze this information, and to initiate appropriate responses to satisfy certain needs (Maintain Homeostasis). The most powerful of these needs is survival.
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Tasting, smelling, seeing, hearing, thinking, dreaming, breathing, heart beating, moving, running, sleeping, laughing, singing, remembering, feeling pain or pleasure, painting, writing...you couldn't do any of these things without your central nervous system! \n\nWhat is the nervous system? \nMade up of your brain, your spinal cord, and an enormous network of nerves that thread throughout your body, it's the control center for your entire body. Your brain uses information it receives from your nerves to coordinate all of your actions and reactions. Without it, you couldn't exist! \n\nWhat are nerves? \nThey're the thin threads of nerve cells, called neurons that run throughout your body. Bundled together, they carry messages back and forth just the way that telephone wires do. Sensory nerves send messages to the brain and generally connect to the brain through the spinal cord inside your backbone. Motor nerves carry messages back from the brain to all the muscles and glands in your body. \n\nSo how do they they pass along messages? \nThrough the marvels of chemistry and a kind of electricity! Neurons are thin. Some are very small, and some can be three feet long! All are shaped somewhat like flat stars which have, to varying degrees, been pulled at each end so that they have long fingers. The fingers of one neuron almost reach to the next neuron. \n\nWhen a neuron is stimulated -- by heat, cold, touch, sound vibrations or some other message -- it begins to actually generate a tiny electrical pulse. This electricity and chemical change travels the full length of the neuron. But when it gets to the end of finger-like points at the end of the neuron, it needs help getting across to the next extended finger. That's where chemicals come in. The electrical pulse in the cells triggers the release of chemicals that carry the pulse to the next cell. And so on and so on and so on. \n\nSource(s):\n\nsearch engine: ask.com\nkey words: The Nervous System\n(This is pretty broad in nature, is there a specific question related to an answer you need that I can help you with?\nohhhhhh...nurse?????
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try this link and it should answer your question it is with diagram!\n\nhttp://en.wikipedia.org/wiki/Central_nervous_system
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Great Question!Here is some information about how the brain works:\n\nHow does your brain work?\n\nYour brain is the hub of your nervous system. It is made up of 100 billion nerve cells - about the same as the number of trees in the Amazon rainforest. Each cell is connected to around 10,000 others. So the total number of connections in your brain is the same as the number of leaves in the rainforest - about 1000 trillion.\nYour brain is made up of 100 billion nerve cells - about the same as the number of trees in the Amazon rainforest.\n\nHow does your nervous system work?\n\nThe nervous system is a network of cells called neurones which transmit information in the form of electrical signals. Your brain has around 100 billion neurones, and each communicates with thousands of others - as many connections as in the world's telephone system, the biggest machine on the planet. Neurones communicate with each other at special junctions where chemicals help to bridge the gap between one neurone and the next. \nThe nervous system is a vast network of interconnecting neurones.\n\nMore about nervous connuections:\n\nThe electrical signals (nerve impulses) carried by neurones are passed on to other neurones at junctions called synapses. The signal may be directly transferred at electrical synapses or, if there is no physical link between adjacent neurones, the signal is carried across the gap by chemicals called neurotransmitters. By using neurotransmitters, the nervous system can alter the way a message is passed on. Each neurone communicates with many others and this contributes to the amazing complexity of the brain.Each neurone communicates with many others.\n\nHope it helps.
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Autonomous nerve-sys.-regulates our organs and vital functions.\nNerve endings-contain neurotransmitters in  its fluid.\nneurons-bundles of nerve cells.\nElectrical impulses-together with chem. transmits messages.\nsynapse-Impulse jump to dendrites from here.
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Because the spinal chord is still part of the central nervous system.  There are many reflex arcs where nerves come from the limbs, to the spinal chord, where they synapse with neurons that go right back to the limbs.  Not all sense/response loops are brain mediated--the spine itelf has the ability to send and recieve signals.\n\nDeath doesn't come all at once.  After the brain disconnects, the cells can live as long as they still have the oxygen and nutrients to perform metabolic processes.
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The brain is part of the nervous system.  The smallest component of the nervous system are axons, which have a head and a tail.  Millions of these line up head to tail and form the nerve endings in your body.  In the space between each head and tail (called a synapse) chemicals can flow.  When something happens (you prick yourself), an axon signals chemicals to flow between the synapse, activate the next axon, and the next until the message reaches your brain and you react.  Different drugs affect the ability for these chemicals to flow across the synapse (speeding up, slowing down, or not at all) or wipe out axons all together leaving gaps in the message chain.
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Autonomic nervous system
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the presence of cerebrospinal fluid prevents the brain from mechanical shocks.it acts as a cushion for the cortex.A clear liquid, the cerebrospinal fluid, bathes the entire brain and fills a series of four cavities, called ventricles, near the center of the brain. The cerebrospinal fluid protects the internal portion of the brain from varying pressures and transports chemical substances within the nervous system.\n\nfor more deatils look into\n\nhttp://en.wikipedia.org/wiki/Cerebrospinal_fluid
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nervous system = consist of brain, nerves and spinal cord.\nrespiratory system = for breathing\ncardiovascular system = circulation of blood\ndigestive system = digestion of food\nurinary system = excreting of urine from our body\nlymphatic system = body defenses\nexcretory system = sweat glands\nintergumentary system = skin\nreproductive system = ovary and testes
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The brain is the organ responsible for thought and other functions.  The mind is the abstract concept that is the culmination of all thoughts, not a physical object.
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Neurological science involves the study of neurons and anything made up of nourons. What gets studied are the brain, the spinal cord, and the single neurons which send messages to and from your muscles.\nA challenge presented to neurological scientists is the task of building a model that starts with single neurons and builds up to the complex system that is the brain and the spinal cord. \nMost of the neurological biologists to whom I have spoken are currently examining the sequences of proteins (neuropeptides) which are abundant in neurons.
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The following website has many links to sites with information on the central nervous system:\nhttp://search.nlm.nih.gov/medlineplus/query?DISAMBIGUATION=true&FUNCTION=search&SERVER2=server2&SERVER1=server1&PARAMETER=central+nervous+system+disorders&x=47&y=14\nCheck out the "Drugs and Supplements" link to find out side effects of drugs and drug interaction problems.
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We do use our brains but there are many functions of the brain remains unknown and not discovered.Some of the percentage makes up the mass of water,blood vessels,white blood cells...Who knows in ancient times we 've got telepathic ability?=P
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The endocrine system produces hormones and works with the circulatory system - that carries them. The nervous system works with the respiratory system and every other system in the body; such as the gastrointestinal system and reproductive systems.
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That 10% story has fallen to Urban Myth status.  New medical imaging techniques can now show which parts of the brain are in use during particular functions, such as speaking, reading, listening to music, etc.  Turns out that your brain uses many differnt parts to do most functions, but certiain functions TEND to concentrate in particular areas.\n\nWhat remains of the myth, though, may actually help understand what I said in the last paragraph.  Many people who have hade severe brain damage and loss of many functions, can sometimes regain at least some ot those functions when the brain learns to use other, undamaged parts to do what the damaged parts used to.\n\nYeah, a vital organ.  An artificial heart can keep a person going, but with no brain, even a beating heart runs in an empty shell.
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Nervous system is devided in to two parts: central(CNS) and peripheral nervous systems(PNS).CNS is the brain and the spinal cord,PNS is composed of many nerves that contains neurones (nerve fibers),these neurones are of two types,Efferent(sensory) neurones carry the messages from the different body organs to the CNS,while the afferent(motor) neurones carry the messages from the CNS back to the different organs. When any part of the system is stimulated by any stimulant;whether it is external or internal,this stimulation will be carried as a message to the CNS where it is translated and then appropriate action is planned, this action then is carried by the motor neurones back to target cells or organs to carry on the plan of action tward that stimulant...It's  a complicated process that really shows the power of the creator who designed it---our lord