Select all of the following that are true about a neuron’sfunction.
1.An action potential occurs if the membrane potential exceedsthe threshold potential.
2.A neuron expends no energy while it maintains a restingpotential.
3.When the neuron receives a stimulus, sodium ions begin to rushout of the axon.
4.When threshold potential is reached, sodium channels all alongthe axon open up at once.
5.An axon maintains a positive charge during rest.
6.During the peak of an action potential, more sodium ions arefound inside the axon than when it is at resting potential.
7.During an action potential in one section of an axon, sodiumchannels first open, then delayed potassium channels open andsodium channels close.
