The nerve impulses always travel in one direction from dendrites to axon terminals. prevents an action potential from travelling backward? a. Hyperpolarization of the neuron makes the membrane more positive

The nerve impulses always travel in one direction from dendrites to axon terminals. prevents an action potential from travelling backward? a. Hyperpolarization of the neuron makes the membrane more positive and prevents another action potential. b. After repolarization, the refractory period occurs, where the sodium ions are found outside the cell. c. After repolarization, the reversal of ions prevents another action potential as there would not be enough sodium ions outside the cell to rush in. d. The refractory period prevents another action potential by lowering the threshold potential.