What happens to the neuron just before a neural message is transmitted to adjacent neurons?
A) The cell membrane near the axon becomes more permeable.
B) Sodium ions exit at the end of the axon.
C) Neurotransmitters are not allowed to permeate the cell.
D) The neuron becomes more and more negatively charged.

Question

Quizplus · Accepted Answer

Just before a neural message is transmitted to adjacent neurons, the cell membrane near the axon becomes more permeable, allowing positively charged ions such as sodium (Na+) to flow into the cell. This results in a depolarization of the membrane potential and the generation of an action potential, which propagates down the axon and eventually triggers the release of neurotransmitters at the synapse.

What Happens to the Neuron Just Before a Neural Message