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The Nervous System (synaptic knobs occur at the ends of axons (cholinergic…
The Nervous System
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All or Nothing- All stimuli great enough to bring the membrane to threshold will produce identical action potentials
8.3 Action Potential
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Action Potential
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When threshold potential is reached, the rapid opening of Na+ channels creates depolarization and even reversal to +30mV
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When K+ channels open and Na+ channels close and repolarization occurs= recovery of the RMP to -70 mV
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(8.2) Neurons are specialized for intercellular communication and are supported by cells called neuroglia
Neuron structure
cell body-central position of neuron; contains organelles, except centrioles
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