Gastric Secretion — Topic Test
12 questions · exam mode (answers revealed at the end). 18 min suggested.
A researcher studies gastric acid secretion in a healthy volunteer. After stimulation, the parietal cell secretes hydrogen ions into the lumen against a steep gradient. The primary transporter directly responsible for moving hydrogen ions into the gastric lumen is which of the following?
AH+/K+ ATPase
BNa+/H+ exchanger
CNa+/K+ ATPase
DH+ coupled peptide cotransporter