Explore the intricacies of gastric secretions in this comprehensive 36-minute video on gastrointestinal physiology. Delve into the exocrine and endocrine functions of the stomach, learning about acid production, intrinsic factor, and vitamin B12 absorption. Examine the alkaline tide phenomenon and the nervous and hormonal control of gastric secretions. Investigate the roles of various GI hormones, with a focus on gastrin and its effects on parietal cells. Understand the different phases of gastric acid secretion, pro-acid factors, and prostaglandins. Discover the mechanisms behind pentagastrin, Zollinger-Ellison syndrome, and peptic ulcers. Gain valuable insights into competitive and non-competitive enzyme inhibitors, enhancing your understanding of enzyme kinetics in the context of gastric physiology.