5TH SEM MAJOR : PAPER 5.3 CLASSIFICATION OF HORMONES BY. DR. LUNA PHUKAN Hormones can be classified according to their chemical nature, mechanism of action, nature of action, their effects, and stimulation of Endocrine glands. i. This category of hormones are divided to six classes, they are hormones steroid; amines; peptide; protein; glycoprotein and eicosanoid. Hormones: Hormones are the chemical messenger produced in small amount by endocrine glands, secreted into blood stream to control metabolism and biological activities in target cell or organs. Characteristics or properties of hormone Low molecular weight Small soluble organic molecules Rate of diffusion is very high and are readily oxidized but the effect does not remains constant It is effective in low concentration Travels in blood It has its target site different from where it is produce and is specific to a particular target Hormones are non-specific for organisms and may influences body process of other individuals Functions of hormones Regulatory and homeostasis functions Maintain consistency of interior of cell Permissive functions; movement of substance in and out of cell Integrative function; usually balance two system Developmental function; helps in development of foetus Classification of hormone Hormones are classified A.On the basis of chemical nature B.On the basis of mechanism of hormone action Group I hormone Group II hormone A. On the basis of chemical nature: Protein hormones: insulin ...
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