Means the nose is a complex device, not only to help us smell wonderful (or not so great) smells, but also to serve as a device to purify the incoming air. It might be surprising to know that your nose is secreted when you're healthy, about 32 ounces (0.94 liters) of mucus every day. This does not tend to make long nose; instead most of this mucus is located on the back of the throat and swallowed in the end. These secretions help to hydrate, warm and filter incoming air and, in conjunction with the hair in small nose.So why the nose to run when it is cold? This is an excellent question, which is fortunately a simple explanation to some extent. Under the glands that secrete mucus, you have large quantities of small blood vessels, which helps to provide these glands. In cold weather, these blood vessels dilate or more growth. This means you have more blood supply to the nose, which in part protects the nose from the cold, but it also means your nose will begin production of larger quantities of mucus and liquid.
