A 40-year-old male comes with complaint of indigestion and decreased appetite. He has a history of being treated for duodenal ulcer 4 years back. Investigation reveals elevation of gastrin levels. Which of the following statement is true regarding gastrin?
Secreted by parietal cells of stomach Secreted by alpha ceils of pancreas Decreases bicarbonate content in pancreatic secretion It gets stimulated by endoluminal peptides in stomach