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the central nervous system consist of the --- and the -----
brain and spinal cord
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the ______consists of the nerves that connect the central nervous system to other parts of the body.
cnetral nervous system
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resting neurons having more negative inside and more positive outside is said to be
pollarized
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divisions of peripheral nervous system
sensory division - picks up sensory info & delivers it to Cns
Motor Division - carries info out from sensory to muscles and glands (effectors)
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division of motor divisions
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carries info to skeletol muscle
somatic
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carries info to smooth muscle, cardiac muscle and glands
autonomic
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cell membranes are electrolly charged (unequal distribution of ions)Resting Potential
pollarized
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afferent, carry impulses to CNS , most are unipolar, some are bipolar
sensory neurons
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multi polar, carry impulses away from CNS carry impulses to effectors
motor neurons
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contains mylenated axons
whate matter
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contains unmylenated axons
gray matter
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ability to do work
potential
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membrane is at rest, threshold stimulus is reached, sodium channels open and membrane depolarizes, potassiam leaves cytoplasm and membrane is repolarized
potential change
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