Saliva
978-613-3-80935-2
6133809353
64
2010-12-07
29.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Saliva (also referred to as spit, spittle, drool or slobbers) is the watery and usually frothy substance produced in the mouths of humans and most other animals. Saliva is a component of oral fluid. Saliva is produced in and secreted from one of the three salivary glands. Human saliva is composed of 98% water, while the other 2% consists of other compounds such as electrolytes, mucus, antibacterial compounds, and various enzymes. As part of the initial process of food digestion, the enzymes in the saliva break down some of the starch and fat in the food at the molecular level. Saliva also breaks down food caught in the teeth, protecting them from bacteria that cause decay. Furthermore, saliva lubricates and protects the teeth, the tongue, and the tender tissues inside the mouth. Saliva also plays an important role in tasting food, by trapping thiols produced from odorless food compounds by anaerobic bacteria living in the mouth.
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