The following points highlight the ten important gastrointestinal hormones that regulates digestive secretion. The hormones are: 1. Gastrin 2. Enterogastrone 3. Secretin 4. Cholecystokinin pancreozymin 5. Duocrmin 6. Enterocrinin 7. Vasoactive Intestinal Peptide 8. Villikinin 9. Somatostatin 10. Pancreatic Polypeptide. Hormone # 1. Gastrin: This hormone is secreted by gastrin cells (= G-cells) in the pyloric region of the stomach. [...]
The below mentioned article provides a quick note on the Discovery of Hormones. The first hormone was discovered by the English physiologist William M. Bayliss and Ernest H. Starling in 1903. The term hormone was introduced by Starling in 1905. Properties of Hormones (General Characteristic Features of Hormones): (1) They are synthesized and secreted by living endocrine glandular cells within [...]
The following points highlight the two important mechanisms of hormone action. The mechanisms are: 1. Mode of Protein Hormone Action through Extracellular Receptors 2. Mode of Steroid Hormone Action through Intracellular Receptors. Mechanism # 1. Mode of Protein Hormone Action through Extracellular Receptors: (i) Formation of Hormone Receptor Complex: Every hormone has its own receptor. The number of receptors for [...]