What occurs when there is no net ion movement across the cell membrane?
Equilibrium potential of the ion
1 of 13
What is the equation for driving force?
Membrane potential - Equilibrium potential of the ion
2 of 13
The size of a current is determined by driving force (Vm - Eion) and what other factor?
Number of open channels (conductance, gion)
3 of 13
Which method in recording current involves the voltage inside the cell fixed at a specified value which can be adjusted at intervals by the experimenter and the current is then measured at the defined voltage?
Voltage clamp method
4 of 13
A positive deflection shows positive ions entering the cell. True or false?
False
5 of 13
Ionotropic receptors are also known by which name?
Ligand-gated ion channel receptors
6 of 13
G-protein coupled receptors are also known by which name?
Metabotropic receptors
7 of 13
An excitatory electrical effect is usually due to the influx of which ion?
Na+
8 of 13
An inhibitory electrical effect is usually due to the influx of which ion?
Cl-
9 of 13
What type of ions do NMDA and non-NMDA channels allow through?
Cations
10 of 13
Depolarisation of a cell will relieve the block of which ion at the NMDA receptor?
Mg2+
11 of 13
Which channels are permeable to Ca2+ ions as well as Na+ and K+?
NMDA
12 of 13
What is the main excitatory neurotransmitter in the brain?
Glutamate
13 of 13
Other cards in this set
Card 2
Front
What is the equation for driving force?
Back
Membrane potential - Equilibrium potential of the ion
Card 3
Front
The size of a current is determined by driving force (Vm - Eion) and what other factor?
Back
Card 4
Front
Which method in recording current involves the voltage inside the cell fixed at a specified value which can be adjusted at intervals by the experimenter and the current is then measured at the defined voltage?
Back
Card 5
Front
A positive deflection shows positive ions entering the cell. True or false?
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