1. Hormones are organic compounds (eg. peptide or a steroid) that is secreted by endocrine glands. It is an inter cellular signalling molecule and induces a physiological response. Hormones maintain blood pressure, blood volume and electrolyte balance, embryogenesis, hunger, eating behaviour and digestion.
2. The major endogrine glands are the pituitary, pineal, thymus. thyroid, adrenal glands and pancreas. In addition men produces hormones in their testes and women produces hormones in their ovary.