This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'The greatest volume of gastric secretion occurs during: \nSelect and explain. \nA. Cephalic phase, B. Gastric phase, C. Intestinal phase, D. Deglutition', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B:\xa0The\xa0gastric phase\xa0is the period of greatest gastric secretion. This phase is responsible for the greatest volume of gastric secretions, and it is activated by the presence of food in the stomach.\nA:\xa0The\xa0cephalic phase\xa0of stomach secretion is anticipatory and prepares the stomach to receive food. In the cephalic phase, sensations of taste, the\xa0smell\xa0of food, stimulation of tactile receptors during the process of chewing and swallowing, and pleasant thoughts of food stimulate centers within the\xa0medulla oblongata\xa0that influence gastric secretions.\nC:\xa0The\xa0intestinal phase\xa0of gastric secretion primarily inhibits gastric secretions. It is controlled by the entrance of acidic chyme into the duodenum. The presence of chyme in the duodenum initiates both neural and hormonal mechanisms.\nD:\xa0Deglutition\xa0the action or process of swallowing.', 'role': 'assistant'}]