A word is one or more sounds that in combination have a specific meaning assigned by a language. The symbolic meaning of words can be so powerful that people are willing to risk their lives for them or take the lives of others.
A nerve impulse is the relaying of a coded signal from a nerve cell to an effector (a muscle cell, a gland cell or another nerve cell) in response to a stimulus. It is the means by which a nerve cell communicates with another cell.
39 terms. neuron. mass of nerve cells; structural and functional unit of nervous system; specialized to react to physical and chemical changes in their surroundings; transmits info in the form of electrochemical changes (nerve impulses) to other neurons and to cells outside nervous system. nerve impulse.