Cross-section of the gastric wall observed with the objective of 10x. Going from outside inwards the following layers can be seen: internal muscular layer, submucous, muscular layer of the mucous, and mucous. The folds of the last one are visible in this microphotography. They can also be seen at higher magnification in other microphotography (framing in blue). Details of the mucous and muscular layer of the mucous can be observed in other microphotography (framing in red)