Some of the factors that affect the rate at which particles diffuse include: the particle's molecular weight, temperature, concentration difference, diffusion distance, permeability and surface area.
This region of the stomach is called the 'cardiac' region. How does the mucosa in this region change? Gastric Glands in the fundus (body) of the stomach. The epithelium of the mucosa of the fundus and body of the stomach forms invaginations called gastric pits. The lamina propria contains gastric glands, which open into the bases of the gastric pits. These glands are responsible for the synthesis and secretion of the gastric juice.
Helicobacter pylori (H. pylori) is a bacterium that can inhabit various areas of the stomach and small intestine. It causes a chronic low-level inflammation of the stomach lining and is strongly linked to the development of ulcers and stomach cancer. Over 80% of individuals infected with the bacteria are asymptomatic.