A data gets exchanged when this action potential is passed from the dendrites of one neuron to the axon of another neuron. We have heaps of them, the neurons.
In case you are new to some terms, here is the whole summary
Neuron: Cell that constitutes the sensory system and helps body conduit of minute informations, etcetera. Made of Soma, Dendrites, and Axon(only one axon is available in one neuron).
Soma: This is the place each organelle of a neuron is found.
Dendrites: They are the receivers of data.
Axon: They transmit the action potential to different neurons.
Node of Ranvier : That space in the middle of neurons. Responsible for flagging. Neurotransmitters play here.
Axon Hillock: A site in soma which totals the potential from neurotransmitter before Axon of alternate neurons lift it up.
Synapse: Space of the connection between two or more neurons.
Myelin sheath: the rectangle that was around an axon to aid fast transfer of electrical impulses. This fast transmission is called saltatory conduction rather that simple propagation. Logic is the more myelin sheath, the faster the transmission.
Photo credited to Jamie Ward
posted from Bloggeroid