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Hormone
–
a byproduct of living cells that circulates in bodily fluids (like blood) or sap and has a particular,
frequently stimulating influence on the activity of cells, typically far from its source
Axon
–
a solitary nerve cell process that is typically lengthy and carries impulses away from the cell body
Nerve
–
any of the filamentous neural tissue bands that carry nerve impulses, connect the nervous system to
various organs, and are made up of axons, dendrites, and protective and supporting structures
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