somatic nervous system - voluntary; contracts skeletal muscle, autonomic nervous system - involuntary control of the body, neuroglia - support neurons and neural activity , astrocytes - support blood brain barrier, neuron - carry signals throughout the body, oligodendrocytes - form myelin sheaths in the CNS, nodes of ranvier - gaps in between myelin sheaths , ependymal cells - produces cerebrospinal fluid, bipolar neuron, microglia - immune cells of the CNS, unipolar, central nervous system - brain and spinal cord , peripheral nervous system - nerves and ganglia; outside of the brain and spinal cord , sensor/sensation - receives incoming signals , response - controls an effector , schwann cells - forms myelin sheaths in the PNS, satellite cells  - surround and support ganglia , depolarization - inside of the neuron becoming more positive , repolarization - inside of the neuron return to negative state  , hyperpolarization - inside of the neuron becomes VERY negative , excitatory postsynaptic potential - movement towards the threshold , inhibitory postsynaptic potential - movement away from the threshold, nicotinic receptor - receptor for nicotine , cholinergic receptor - receptor for acetylcholine  , muscarinic receptor - receptor for muscarine ,

Nervous System

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