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Today we are going to discuss about hormones.
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The hormones are chemical messengers which are released by the endocrine system into the bloodstream.
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The hormones are specific to the target cell and exhorts their action on the target cell.
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The types of hormones can be classified into amino acid hormones, peptide hormones, and steroid hormones.
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The amino acid hormone are formed of a single amino acid.
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For example, the hormone melatonin is derived from the amino acid tryptophan.
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Another type of hormone classified as peptide hormones are formed of chains of amino acid.
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The amino acid chain may be a long or short chain.
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For example, oxytocin is a peptide hormone.
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The third type of hormone known as the steroid hormones are derived from cholesterol.
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For example, estrogen is a type of steroid hormone...