A member asked:

What is the definition or description of: hormone?

A doctor has provided 1 answer

See below: A hormone (from greek ὁρμή, "impetus") is a chemical released by a cell or a gland in one part of the body that sends out messages that affect cells in other parts of the organism. Only a little amount of hormone is required to alter cell metabolism. In essence, it is a chemical messenger that transports a signal from one cell to another.

Answered 5/3/2016

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