Definition: Mucosas, also known as mucous membranes, are the layers of skin that cover the respiratory and digestive tracts. These include the mouth, nose, throat, esophagus, stomach, and small intestine. Mucus is a sticky substance produced by these cells to help protect the body from pathogens, but it can also provide lubrication and aid in digestion. Mucosas play an important role in maintaining the health of the respiratory system by filtering out foreign substances like dust or pollen.
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