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The small intestine mucosa feeds the nutrients, medications, and unfortunately some "bad" foreign substances when we imbibe them into our bloodstream. The substances are then sent throughout the body where they are needed (or not, such as alcohol, cigarette smoke, etc.). This is not the only mucosa capable of doing this. The tongue and mouth and nasal mucosa can absorb medication and send it to the bloodstream.

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13y ago
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Q: What is the function of the mucosa layer in the small intestine?
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