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Unformatted text preview: milliseconds-*when people have Multiple Sclerosis its because of damage to the Myelin Sheath. Action Potential a neural impulse; a brief electrical charge that travels down an axon generated by the movement of positively charged atoms in and out of channels in the axons membrane * like the impulses we were just talking about with the Myelin Sheaths* Threshold the level of stimulation required to trigger a neural impulse Synapse [SIN-aps] junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron tiny gap at this junction is called the synaptic gap or cleft Neurotransmitters chemical messengers that traverse the synaptic gaps between neurons when released by the sending neuron, neuro-transmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether it will generate a neural impulse...
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- Spring '09
- Biological Psychology