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mucous membranes

Sunday 10 April 2022


Definition : A mucous membrane or mucosa is a membrane that lines various cavities in the body and covers the surface of internal organs. It consists of one or more layers of epithelial cells overlying a layer of loose connective tissue.

It can be of exodermal or endodermal origin. It is continuous with the skin at body openings such as the eyes, ears, inside the nose, inside the mouth , lip , vagina , the urethral opening and the anus.

Some mucous membranes secrete mucus, a thick protective fluid.

The function of the membrane is to stop pathogens and dirt from entering the body and to prevent bodily tissues from becoming dehydrated.


- anomalies of mucous membranes