To calculate the number of ions entering the axon during an action potential, you need to know the membrane capacitance, the change in membrane potential, and the specific ion's charge. First, you can use the formula ( Q = C \times \Delta V ), where ( Q ) is the charge (in coulombs), ( C ) is the capacitance (in farads), and ( \Delta V ) is the change in voltage (in volts). Then, divide the total charge ( Q ) by the charge of a single ion (for example, the charge of a sodium ion is approximately ( 1.6 \times 10^{-19} ) coulombs) to find the number of ions that entered the axon. This provides an estimate of the ion influx during the action potential.
The charge is 1.6E-19 per coulomb. 1 mole/liter=6.02E20 (particles( ions, atoms, ect)/cm^3)
Sodium ions enter the axon during action potential. This influx of sodium ions depolarizes the axon membrane, leading to the propagation of the action potential along the axon.
It provides insulation to the axons and dendrites during depolarization or action potential.
Voltage-gated sodium channels open during the depolarization phase of an action potential, when the membrane potential becomes more positive.
the Nernst potential of Sodium is +60mV. most action potentials do not reach +60mV at peak depoloarization. http://openwetware.org/images/thumb/a/a6/Action-potential.jpg/300px-Action-potential.jpg.png
Resting potential
During an action potential in a neuron, there is a rapid change in electrical charge across the cell membrane. This change allows for the transmission of signals along the neuron.
During an action potential, the neuron's electrical charge rapidly changes from negative to positive, allowing for the transmission of signals along the neuron.
Depolarization is the first event in action potential. During depolarization, the sodium gates open and the membrane depolarizes.
Voltage-gated Na channels open at the beginning of an action potential when the membrane potential reaches a certain threshold level.
During the action potential, there is a depolarization phase where the cell membrane potential becomes less negative, followed by repolarization where it returns to its resting state. This involves the influx of sodium ions and efflux of potassium ions through voltage-gated channels. The action potential is a brief electrical signal that travels along the membrane of a neuron or muscle cell.
After an action potential is fired, the neuron goes through a refractory period where it cannot fire another action potential immediately. During this time, the neuron resets its electrical charge and prepares for the next signal.