Page 15 - E-LKM Asam Basa_Neat

Interlude

Antacids

Adult produces between 2 and 3 L of gastric juice daily.
This juice is a digestive fluid secreted by glands in the

mucous membrane or mucosa that lines the stomach.
Gastric juice contains hydrochloric acid. A simple diagram

of stomach is shown in Figure 1.10. The inside lining is made
up of parietal cells which are fused together to form tight

junctions. The interiors of the cells are protected from the
surrounding by the cell membranes. These membranes

allow water and neutral molecules to pass in and out of the
stomach, but they usually block the movement of ions such
as H+, Na+, K+, and CI- ions. In healthy stomach the

concentration of hydrochloric acid in the gastric juice does
not fluctuate greatly.

14