Q What are chemical messengers secreted by ductless glands called?
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Explanation
Hormones are chemical messengers secreted by endocrine glands, which are ductless glands. These glands are controlled by the endocrine system and release hormones directly into the bloodstream. Hormones play an important role in regulating various bodily functions, such as metabolism, growth and development, and reproductive processes. They act on specific target cells, which have receptors for the hormone, and trigger a response in the target cell. Hormones can be classified into different categories, such as peptide hormones, steroid hormones, and amine hormones, based on their chemical structure. Peptide hormones are composed of amino acids, while steroid hormones are derived from cholesterol and amine hormones are derived from amino acids. Hormonal imbalances can lead to various disorders, such as diabetes, thyroid disorders, and infertility.
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