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Endocrine system secretes chemical messengers, called hormones act on…
Endocrine system secretes chemical messengers, called hormones act on receptors to cause change at target organs
endocrine glands. ductless, synthesises and secretes hormones
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Hormones
peptide.
chains of amino acids, glycoproteins and short polypeptides and small proteins
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lipid derived
Steroids
Derived from cholesterol
androgens, oestrogens and progesterone, corticosteroids, calcitriol
Eicosanoids
arachidonic acid, a phospholipid found in cell membranes
prostaglandins, clotting factors, leukotrienes
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Change types, quantities or activities of enzymes and structural proteins in target cells
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Hypothalamus, pituitary gland, pineal gland, thyroid and parathyroid glands, adrenal gland, pancreas and reproductive glands.
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Anti- diuretic hormone, Corticotropin-releasing hormone, Thyrotropin-releasing hormone (TRH), Gonadotropin-releasing hormone (GnRH), Growth hormone–releasing hormone. Prolactin-releasing hormone (PRH) ( Dopamine) Oxytocin
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Reproduction and stress responses, Regulates metabolism and energy balance. coordinates function between cells, produces hormones, controls release. Maintains homeostasis. Regulates water and electrolyte levels. Biological clock and aids immune system
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