2867301
Description
Flashcards by carinaflorea1, updated more than 1 year ago
|
Created by carinaflorea1
over 9 years ago
|
|
| Question | Answer |
| 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 |
Want to create your own Flashcards for free with GoConqr? Learn more.