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Chemical Classification of Hormones

Chemical #classificationofHormones Hormones are informational molecules secreted by the endocrine cells in one part of the body in response to changes in the external or internal environment and carried by the blood to another part where they stimulate or inhibit specific physiological processes for the good of the body as a whole. In other words, the hormones are chemical messengers that regulate the biological processes in the organisms. •To regulate various functions, different types of hormones are produced in the body. WATCH MORE VEDIOS OF ENDOCRINE SYSTEM    • The Endocrine system: Functions, Organs.      • What Are Glands? The Anatomy, Function and...      • What are Hormones and who discovered them?...   Chemically,  they can be  divided into two broad classes: a)Those that are soluble in lipids and b)Those that are soluble in water. The #lipidsolublehormones #Watersoluble lipid soluble hormones include steroid hormones and thyroid hormones. i.steroid hormones are fat-soluble and are able to pass through a cell membrane. Sex hormones such as testosterone, estrogen and progesterone are examples of steroid hormones.                               •| #Steroidhormones are derived from cholesterol  Thyroid hormones (T3and T4 ) are synthesized by attaching iodine to the amino acid tyrosine. The benzene ring of tyrosine make T3 and T4 lipid-soluble.  • #Watersoluble hormones include amine hormones, peptides and protein hormones. • By far the most numerous are the protein or peptide  hormones. ranging in size from just three to over 200 amino acids. •#Aminehormones are synthesized by decarboxylation or modification of certain amino acids. •The catecholamines- epinephrine, norepinephrine and dopamine are synthesized by modifying the amino acid tyrosine. • Histamine is synthesized from the amino add histidine by mast cells and platelets. #Serotonin and #melatonin are derived from tryptophan. •The smaller peptide hormones consist of chains of 3 to 49 amino acids; •the larger protein hormones include 50 to 200 amino acids. •Examples of peptide  hormones are antidiuretic hormone and oxytacin ; protein hormones include human growth hormone and insulin.  Several of the protein hormones, such as thyroid stimulating hormone, have anached carbahydrate groups and thus are #glycoproteinhormones. #basicsofbiology #dbt #gate #neet #11thclass #12thclass #csirnet #endocrinology #biology #hormones