1. Hormones are specifically produced in response to a certain stimulus.
2. Depending on nature and intensity of the stimulus, the rate of secretion of a hormone varies from low to very high.
3. Hormones are produced in one organ and show their effect on distant ‘target’ organ. The source and the target region may be distantly located.
4. Hormones are directly poured in blood circulation and always carried through blood.
5. Hormones are always bound to specific carrier proteins while being transported through the blood.
6. Hormones have a high degree of target specificity.
7. Every hormone acts basically by modifying some aspect of cellular metabolism.
8. The excessive secretions or deficiencies- of hormones may lead to serious disorders. Such disorders are called hyper – and hypo- disorders, respectively.
