Podcast
Questions and Answers
What is the primary function of the K+/H+ exchanger in parietal cells?
What is the primary function of the K+/H+ exchanger in parietal cells?
- To secrete K+ ions into the stomach lumen
- To exchange HCO3- for Cl- ions
- To secrete H+ ions into the stomach lumen
- To regulate the pH of the parietal cell cytoplasm (correct)
What is the primary function of the HCO3-/Cl- exchanger in parietal cells?
What is the primary function of the HCO3-/Cl- exchanger in parietal cells?
- To secrete Cl- ions into the stomach lumen
- To regulate the pH of the parietal cell cytoplasm
- To exchange K+ for H+ ions
- To secrete HCO3- ions into the stomach lumen (correct)
How does somatostatin inhibit acid secretion by parietal cells?
How does somatostatin inhibit acid secretion by parietal cells?
- By reducing cAMP concentrations in parietal cells (correct)
- By directly blocking the proton pump in parietal cells
- By increasing cAMP concentrations in parietal cells
- By stimulating the release of histamine from ECL cells
What is the primary cause of the 'alkaline tide' phenomenon?
What is the primary cause of the 'alkaline tide' phenomenon?
Which of the following is the most potent regulator of parietal cell acid secretion?
Which of the following is the most potent regulator of parietal cell acid secretion?
What is the primary mechanism by which drugs like omeprazole inhibit acid secretion by parietal cells?
What is the primary mechanism by which drugs like omeprazole inhibit acid secretion by parietal cells?
What is the primary cation associated with pancreatic secretions during active eating?
What is the primary cation associated with pancreatic secretions during active eating?
In the pancreas during stimulation of secretion, what is the relationship between anions and cations?
In the pancreas during stimulation of secretion, what is the relationship between anions and cations?
How is HCO3- transported into the lumen of the pancreatic duct?
How is HCO3- transported into the lumen of the pancreatic duct?
What is the effect of cystic fibrosis on pancreatic duct cells?
What is the effect of cystic fibrosis on pancreatic duct cells?
What happens to the pancreatic juice's osmolality with increased flow rate?
What happens to the pancreatic juice's osmolality with increased flow rate?
How is the byproduct H+ transported out of the duct cell?
How is the byproduct H+ transported out of the duct cell?
What is the primary role of the K/H+ exchanger in parietal cells?
What is the primary role of the K/H+ exchanger in parietal cells?
What is the function of the HCO3-/Cl- exchanger in parietal cells?
What is the function of the HCO3-/Cl- exchanger in parietal cells?
What is the primary function of somatostatin in regulating gastric acid secretion?
What is the primary function of somatostatin in regulating gastric acid secretion?
What is the 'alkaline tide' in the context of gastric acid secretion?
What is the 'alkaline tide' in the context of gastric acid secretion?
Which of the following is true regarding the regulation of HCl secretion by parietal cells?
Which of the following is true regarding the regulation of HCl secretion by parietal cells?
What is the primary source of H+ ions for HCl secretion by parietal cells?
What is the primary source of H+ ions for HCl secretion by parietal cells?
