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Creado por carinaflorea1
hace alrededor de 9 años
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Pregunta | Respuesta |
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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