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Beschreibung
Karteikarten von carinaflorea1, aktualisiert more than 1 year ago
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Erstellt von carinaflorea1
vor fast 9 Jahre
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| Frage | Antworten |
| Membrane Potential | difference in electrical charge between inside and outside of a cell |
| Resting Potential | -70 m V - resting state of polarized neuron |
| Sodium-Potassium Pump | Mechanisims in the cell membrane that exchange 3 sodium (NA+) ions inside the neuron for two potassium (K+) outside the neuron. |
| Depolarise | Decrease the resting membrane potential |
| Excitatory Postsynaptic Potentials (EPSPs) | depolarisation that increases the likelihood that the neuron will fire |
| Inhibitory Postsynaptic Potentials (IPSPs) | Decrease the likelihood that the neuron will fire |
| Decremental | Signals decrease in amplitude as they travel through the neuron |
| Threshold of excitation | if the sum of depolarizations reaches a certain point, an action potential will occur |
| Action Potential | Reversal of membrane potential(from about -70 to +50mV) All or none responses |
| Intergration | combining a number of individual signals into one overall signal over space and time |
| Voltage-Activated ion channels | channels that open up in response to changes in the level of membrane potential |
| Absolute Refractory Period | Immediately after the initiation of an action potential, there is a period in which another action potential cannot be initated |
| Axodentritic Synapses | Synapses of axon terminal buttons on dendrites |
| Neuropeptides | Large neurotransmitters that are short proteins |
| Ligand | Any molecule that binds to another Neurtrasmitter is a ligand to its receptor |
| Receptor Subtypes | There are various types of receptors to which a neurotransmitter can bind to |
| Ionotropic Receptors | Ligand-activated ion channels |
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