Voltages
What is the voltage of the inside of the axon during resting potential?
What is -70mV?
A neuron uses 3 main channels that allow the neuron to maintain an ideal voltage at -70mV. What channel is the least common out of all 3?
What is the sodium leak channel?
What ion is normally found around the sodium concentration at resting stage?
What is Cl-?
What is the name of the protein wrapped around the neuron?
What is myelin?
What voltage does the inside of the axon have to reach for it to reach action potential?
What is -55mV?
During the depolarization stage of action potential, a sodium ion channel is used to flood the inside of the cell with sodium. What structure is located at the base of the channel to stop the movement of ions before the channel is closed?
What is the amino acid ball?
Depolarization is the result of an influx of Na+ ions. In order to counteract this, what ion repolarizes the axon?
What is potassium?
What is significant about the way that the myelin sheath is structured around the neuron?
What is the gaps in between the myelin?
What is the voltage of the axon when the action potential is fired?
What is +30mV?
Although neurons use both chemical and electrical signals, this is the chemical ligand to the postsynaptic cell’s ligand gated channel.
What is a neurotransmitter?
At the end of the depolarization, the membrane potential is at its highest. At the end of repolarization, the membrane potential is at its lowest. What is the net change in the voltage, roughly?
What is -115mV?
The part of the neuron that receives signals is the _____ and the structure that releases neurotransmitters is the _____.
What is dendrite and axon terminal?
When the inside of the axon polarizes what is the lowest voltage that it reaches?
What is -80mV?
GEFS+ is a genetic disease that affects a neuron’s firing. In this disease, the genes required for sodium channels are mutated, causing a malfunctioning channel to be made. This causes seizures due to lack of which needed process to action potential?
What is repolarization (or sustained depolarization)?
When an action potential makes its way down the axon, it depolarizes it using Na+. What is the final depolarizing agent via a voltage ion channel?
What is Ca2+?
What will be the result of the myelin sheath with no gaps along the axon?
What is slower action potential propagation?
When does the voltage of the axon rise from -70mV to +30mV?
What is depolarization?
In action potential, the sodium potassium pump plays a vital role in the maintenance of the ion balance. By taking the 2 ions against their concentrations, what pump is a key example of this type of transport?
What is coupled?
In a graded potential state, the influx of some K+ ions causes this to occur, or graphically represented, a dip in the graph prior to threshold
what is hyperpolarization?
At resting potential, the main ion found inside the neuron is ______ and the main ion found on the outside is ______.
What is K+ and Na+?