Distinguish between all the tissues composing the stomach.

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The stomach, like all other parts of the gastrointestinal tract, is made up of four different kinds of tissues, each of which has a variety of functions associated with digestion. These parts are the outermost layer facing the stomach cavity, called the mucosa, the layer under that called the submucosa, the next layer called the muscularis externa, and the outermost-layer, called the serosa.

The mucosa of the stomach comprises a large number of gastric glands, which contain a variety of digestive juices. Specialized cells called oxyntic cells produce...

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