By electing new leaders and adopting a democrating form of life
"The Senate of the Roman Republic was a political institution in the ancient Roman Republic. It was not an elected body, but one whose members were appointed by the consuls, and later by the censors. After a Roman magistrate served his term in office, it usually was followed with automatic appointment to the Senate." -Wikipedia
Hope this helped you!
The definition of direction of impulse is the direction that impulse flows through a neuron. An important thing to remember is that the nerve impulse can only travel in one direction.
There are 4 parts of nerve cells; cell body, an axon, synaptic end bulbs, and dendrites.
The dendrites receive the impulses and the axon sends the impulse to other neurons.
