Which of the following correctly describes the sequence ofevents that occurs once a neuron’s threshold for forming an actionpotential is reached?
A. Sodium enters the neuron, followed by potassium leaving theneuron.
B. Sodium enters the neuron at the same time that potassiumleaves the neuron.
C. Potassium enters the neuron, followed by sodium leaving theneuron.
D. Potassium enters the neuron at the same time that sodiumleaves the neuron
Please explain the answer in 200 words orless.
