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| The three major functions of the nervous system are |
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| sensory integrative and motor functioning |
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| process and interpret the information |
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| -neuron’s main component is a cell body, |
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| A long branch projects out of the soma and feeds information through nerve impulses to muscles, organs and other neurons |
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| - Shorter branches project from the soma, bringing information from other neurons of the nervous system. |
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| All the communication occurs across junctions, is just a tiny empty space between two axons or dendrites from different cells. |
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| -the major chemical messengers of the nervous system |
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| neurotransmitters, the major chemical messengers of the nervous system, are released from the neurons before the synapse and bind to the receiving cells located after the synapse |
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| a layer of insulation for nuerons(which helps speed the signal) |
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| (extra info)Nerves that have long axons and dendrites need myelin for added speed. Yet most nerves dont have myelin because they are so close together. |
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