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.
The stomach wall is not composed of protein, so it's not affected by proteolytic enzymes. B) The digestive enzymes of the stomach are not strong enough to digest the stomach wall. The lining of the stomach wall has a protective layer of epithelial cells. D) The stomach wall is protected by large amounts of mucus.