Which of the following best defines the underlined word in the sentence below:

travels along an axon. this triggers a wave of electrical activity that passes from the cell body along the length of the axon to the synapse

use wikipedia, i think they have this.

the exodus of these people from constantinople contributed to the revival of greek and roman studies, which led to the development of the renaissance in humanism and science. byzantine emigrants also brought to western europe the better preserved and accumulated knowledge of their own greek civilization