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This Concept Map, created with IHMC CmapTools, has information related to: nervous system, The Nervous System requires that Neurons Synapse, Synaptic cleft usually they work as action potential reaches the synapse, The Nervous System is made up of Glial Cells, The Nervous System is divided into CNS, Neurons can be Motor (efferent) Neurons, Refractory Period during which -neuron cannot conduct impulses -gradients are reestablished, bind to post synaptic membrane exciting or inhibiting to form excitatory postsynaptic potential Inhibitory postsynaptic potential, Autonomic Nervous system (cardiac+smooth muscle) is further divided into Parasympathetic (resting), The Nervous System can create a reflex arc, the neuron is polarized with Na+ outside K+ inside, Neurons Synapse forming Synaptic cleft, Ca2+ gates open causing synaptic vessicles to release neurotransmitter, Synaptic cleft sometimes these work electrically by gap junctions, the neuron is polarized by -Na+/K+ pump -Differences in permeability, by neurotransmitters such as GABA is inhibitory (brain), Hyperpolarization (-80mV) proceeds to Refractory Period, as action potential reaches the synapse the Ca2+ gates open, PNS is divided into somatic nervous system (skeletal muscle), PNS is divided into Autonomic Nervous system (cardiac+smooth muscle), Myelin Sheath has gaps called Nodes of Ranvier