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11 Cards in this Set
- Front
- Back
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Absolute Refractory Period
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No AP can be triggered for about 2msec due to the double gating of Na channel, this time represents the time it takes for Na channel to reset. AP cannot travel backwards as a result.
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Action Potential
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Occur when voltage gated ion channels open. A brief large depolarization that travel for long distances through a neuron without losing strength, depends on special voltage gated Na channels in the cell trigger zone and along the axon
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Conduction
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The ease at which ions flow down an axon
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Frequency Coding
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Causes greater stimulation, resulting in greater frequency of AP.
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Motor Unit
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describes a functional unit of one motor neuron and all the skeletal muscle fibers it innervates/activates
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Relative Refractory Period
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Responds to greater depolarization
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Depolarization
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Causes more Na entry (positive feedback), makes a neuron more likely to fire
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Transmission
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refers to the movement of neurotransmitters across a synapse
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All-or-None
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action potentials either occur as maximal depolarization or do not occur at all.
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Resting Potential
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State of disequilibrium that sets the stage for rapid changes in membrane potential
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Large potential changes capable of traveling long distances and maintains constant magnitude as they travel
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Action Potential
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