Final Answer:
The intestinal hormone cholecystokinin opposes the influence of gastrin on gastric parietal cells.Thus the option b. opposes the influence of gastrin on gastric parietal cells is correct.
Step-by-step explanation:
Cholecystokinin (CCK) is an intestinal hormone with multifaceted functions in the digestive system. While option (a) is incorrect, as CCK primarily stimulates the pancreas to release pancreatic enzymes but not necessarily high in enzyme content, and option (c) is inaccurate since CCK induces gallbladder contraction rather than gastric motility, option (b) accurately describes one of the key functions of CCK.
Cholecystokinin opposes the influence of gastrin on gastric parietal cells, regulating gastric acid secretion. Gastrin stimulates acid production in the stomach, and CCK acts as a counterbalance by inhibiting these gastric parietal cells, contributing to the fine-tuning of digestive processes.
The regulation of gastric acid secretion is crucial for maintaining the acidic environment necessary for effective digestion. Gastrin, released in response to the presence of food in the stomach, stimulates the secretion of gastric acid.
Cholecystokinin, on the other hand, acts as a brake on this process, preventing excessive acid production. This delicate interplay ensures the coordination of digestive activities, emphasizing the importance of hormonal control in maintaining homeostasis within the gastrointestinal system.
Understanding the specific actions of hormones like cholecystokinin is vital not only for comprehending the intricacies of digestion but also for developing insights into potential therapeutic interventions for disorders related to gastric acid secretion and digestive function. The nuanced regulatory roles of hormones contribute to the overall efficiency and balance of the digestive system.
Thus the option b. opposes the influence of gastrin on gastric parietal cells is correct.