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.
Mucosa: The surface of the stomach is lined by a simple columnar epithelium whose cells are called surface mucous cells. There are numerous invaginations of the surface epithelium into the lamina propria. These invaginations are called gastric pits or foveolae, and are also lined by surface mucous cells.he surface of the stomach is lined by a simple columnar epithelium whose cells are called surface mucous cells. There are numerous invaginations of the surface epithelium into the lamina propria.