It is widely agreed that the gastric mucosa secretes bicarbonate in addition to acid. Gastric secretion of bicarbonate is correctly characterized by which of the following statements?
A. Bicarbonate is secreted by chief cells within gastric crypts
B. Gastric bicarbonate secretion is stimulated by acetylcholine
C. Gastric bicarbonate secretion during fasting results in luminal pH above 6 in normal individuals
D. Prostaglandin E2 is a potent stimulant of gastric bicarbonate secretion
Answer:B
It is widely agreed that the gastric mucosa secretes bicarbonate in addition to acid. Gastric secretion of bicarbonate is correctly characterized by which of the following statements?
A. Bicarbonate is secreted by chief cells within gastric crypts B. Gastric bicarbonate secretion is stimulated by acetylcholine C. Gastric bicarbonate secretion during fasting results in luminal pH above 6 in normal individuals D. Prostaglandin E2 is a potent stimulant of gastric bicarbonate secretion