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Unformatted text preview: 2) Resting Potential [a] condition of electirical tension (happens BEFORE neuron fires) [b] When neuron is at rest its loaded, waiting to fire, (fires fully or not at all all or nothing ) *** Neuron charge in resting potential = -70mv o Sodium potassium pump: active transport system that carries sodium (Na + ) out and potassium (K + in) o Hyperpolarization : interior [of neuron] becomes more negative than when it started at resting potential **difficult to fire o Hypopolarization less negative, polarization is reduced to Axon hillock is enabled to fully depolarize and FIRE NEURON \ Synapse and Receptors: Pre-synaptic terminal : the button like end of an axon, known as collaterall, releases neurotransmitters onto another cell also known as synaptic knob [pre-synaptic terminal] AKA synaptic knob = where axon ends and CALCIUM [Ca ++ ] release neurotransmitters...
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This note was uploaded on 10/27/2010 for the course NSD 225 taught by Professor Short during the Spring '08 term at Syracuse.
- Spring '08