A mucous membrane or mucosa (plural, mucosae or mucosas; Latin tunica mucosa) is a lining of mostly endodermal origin.f the lining is torn or broken, mucus is incapable of performing its roles of preventing infection and retaining tissue moisture levels. In the female, the glans clitoridis and the clitoral hood have mucous membranes.
The cucumber you refer to as regular is the most common field-grown variety. Known as a slicing cucumber, it ranges in size from 6 to 9 inches, and its dark-green skin is usually waxed to prevent moisture loss. The English cucumber, which may be called seedless, European, burpless, or hothouse (which is where it is commercially grown), grows to between 1 and 2 feet in length. Slimmer and smooth-skinned, it is wrapped in plastic and can cost as much as $2 per cucumber.
There are also pickling cucumbers that are smaller and thicker skinned and they last about 2 weeks. The third type is called English, burpless or seedless cucumber and they have a thin peel that is eatable and very small flat seeds - this variety lasts about 8 days in the fridge.