Where does saliva come from?

Saliva glands. Saliva is a complex fluid that is a lubricant, a buffering agent and anti bacterial, among its many functions. We all need lots of it. It is secreted by large glands in the cheeks and under the tongue, emptying into the mouth via large ducts, as well as by many tiny glands located throughout the mouth.
Salivary glands. People have 3 pairs of major salivary glands, the [arotid glands, the parotid glands on the side of your face, the submandibular glands beneath your lower jaws, and the sublingual glands under your tongue, plus over 600 very small minor salivary glands.
Salivary glands. There are many salivary glands in your mouth that produce saliva.