action potential Term applied to the electrochemical signal caused by a rapid and reversible fluctuation in membrane potential used by the nerve cell for intracellular communication. Also known as a nerve impulse.

axon A cylindrical process extending from the nerve cell body specialized for conducting electrochemical signals away from neurons to their targets.

dendrite Name given to one or more tapering, typically branching processes extending from the nerve cell body that are specialized for receiving signals from other nerve cells and the environment.

neurotransmitter Any one of a number of small molecules that are released by a nerve cell at the synapse to pass signals between nerve cells and their targets.

synapse A term applied to the specialized junction between a nerve cell and its target where signals are passed from one cell to the next, usually in the form of chemical signals.

This article describes the major features of the neuron, the class of cell most closely identified with the functions of the nervous system. The major emphasis is on the structure of nerve cells and their basic physiology, along with their biochemical specializations.

Do Not Panic

Do Not Panic

This guide Don't Panic has tips and additional information on what you should do when you are experiencing an anxiety or panic attack. With so much going on in the world today with taking care of your family, working full time, dealing with office politics and other things, you could experience a serious meltdown. All of these things could at one point cause you to stress out and snap.

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