Saliva is formed in salivary glands in our mouth.Saliva contributes to the digestion of food and to the maintenance of oral hygiene. Without normal salivary function the frequency of dental caries, gum disease (gingivitis and periodontitis), and other oral problems increases significantly
The average human nose produces about a liter of mucus per day.Most of the mucus produced is in the Mucus has a reputation as a gross substance and is one that many people would like to avoid. It's actually a very useful material with important functions. It destroys bacteria and viruses, traps particles such as dirt, prevents water loss, humidifies passageways, lubricates the movement of materials, and protects surfaces from damage.gastrointestinal tract.