A drug that blocks the action of carbonic anhydrase in parietal cells would result in

The drug that blocks the activity of carbonic anhydrase will inhibit the reaction between CO2 and water to form carbonic acid (acidic condition) and, as the acidic condition (low pH) is inhibited, it will result in a higher pH during gastric digestion.

Endometrium. This is the inner lining. It is shed during your period.