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What are hormones?
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Chemical Coordination and Regulation (Endocrine System)
What are hormones?
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Hormones are defined as ‘a chemical substance that is secreted into the body fluids by one cell or a group of cells and that exerts a physiological control/effect on other cells of the body’.
They are chemical messengers which carry specific information.
The organ on which a hormone acts is called as a target organ.
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Andrea
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