Explanation

I, II, III and IV. Biochemical classification of hormones [table] Chemical Nature | Origin | Examples ; 1. Biogenic amines or amino acid derivatives | Derival from tyrosine | Thyroxine, adrenaline, noradrenaline and melatonin ; 2. Proteinaceous or polypeptide | Chains of amino acid | Hypothalamic hormones, ACTH, GH, vasopressin, oxytocin, parathormone, calcitonin, MSH, etc. ; 3. Glycoproteinaceous | Protein + carbohydrates | Thyrotropin, FSH, LH ; 4. Steroid | Derived from cholesterol | Sex hormone and adrenocorticoids [/table]