Term
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Definition
| Rapid depolarization of the membrane. Cell reaches 40 mV. |
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Term
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Definition
| Part of the action potential where the inside of the neuron is positively charged with respect to the outside. |
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Term
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Definition
| Rapid repolarization until the membrane is more negative than resting potential. |
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Term
| Undershoot / After-hyperpolarizaion |
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Definition
| Gradual restoration of resting potential. |
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Term
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Definition
| Critical level of depolarization required to generate an action potential. |
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Term
| Absolute refractory period. |
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Definition
| Period after an action potential where it is impossible to initiate another. Lasts ~1 msec. |
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Term
| Relative Refractory Period |
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Definition
| Period in which the relative current required to initiate an action potential is elevated above normal. |
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Term
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Definition
| Allows researchers to "clamp" the membrane potential at a level of their choosing. |
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Term
| Voltage Gated Sodium Channel |
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Definition
| A membrane pore that is highly selective to Na+ ions. |
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Term
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Definition
| Allows the study of ion currents by sealing an electrode to a small patch of membrane. |
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Term
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Definition
| Human genetic disease caused by alterations is structure/function of ion channels. |
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Term
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Definition
| Toxin found in puffer fist. Clogs Na+ channels. |
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Term
| Voltage Gated Potassium Channels |
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Definition
| A membrane pore that is highly selective to K+ ions. |
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Term
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Definition
| Type of ion movement produced between nodes of ranvier due to mylenation. |
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Term
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Definition
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