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Neuron 7th grade

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jen baiocco

on 18 May 2011

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Transcript of Neuron 7th grade

Nervous system Function Structure The nervous system enables your body to...

respond to stimuli
maintain homeostasis What is the basic functional unit of this system? A nerve cell, or neuron, is the basic unit of function. What is the function of these cells? These cells carry electrical messages called impulses throughout the body receive impulses location of the nucleus carries impulse away from the cell body How many different types of neurons are there? There are three types of neurons Let's see how these neurons differ? located in the spinal cord & brain
connect sensory to motor neurons located in the eyes, ears, skin

send impulses to the brain send impulses from the brain to muscles Sensory
neuron interneuron Motor
neuron How does an impulse travel? impulse received by dendrites impulse passes by cell body impulse travels down axon axon releases chemicals chemicals cross synapse chemicals attach to dendrites of next neuron
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