Keto Blaze The innermost layer of the stomach wall is called mucosa, and the stomach acids are produced and secreted from this layer. The next layer is submucosa, which is made of connective tissues. This layer is covered by muscularis externa and then serosa. Muscularis externa consists of three layers of muscles, that are responsible for mixing the food and and the movement of the food. So, this layer has an important role in the function of the stomach. The outermost layer is serosa, which is made of connective tissues. Stomach Secretions: The inner surface of the stomach has different types of epithelial cells that produce various secretions which aid the process of digestion. They include mucus cells that produce mucus, which is alkaline in nature. This mucus prevents harm to the inner layer of the stomach from acids. There are chief cells that produce an called pepsin (aids in breaking down proteins), and parietal cells that produce hydrochloric acid (fights microorganisms and digests food).

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