The brain contains over 100 billion specialized cells called neurons. Neurons can be thought of as the basic processing units of the brain and convey signals by passing electrical impulses called action potentials from one end of themselves to another. Action potentials are generated by the opening and closing of microscopic gates in the cell membrane. These gates are specialized to permit only the passage of certain ions, and the flow of these ions creates electrical current. ction potentials are created at the cell body and are transmitted down the part of the neuron called the axon, which is sheathed in a fatty insulating substance called myelin. At the end of the axon, information is transferred to the next neuron via a specialized structure, called the synapse.
在线投稿
投稿指南
RSS订阅
网友评论：（评论内容只代表网友观点，与本站立场无关！）