The salivary glands make saliva and release it into the mouth. There are three pairs of relatively large, major salivary glands:
Parotid glands are located in the upper part of each cheek, close to the ear. The duct of each parotid gland empties onto the inside of the cheek, near the molars (back teeth) of the upper jaw.
Submandibular glands, in the floor of the mouth, have ducts that empty behind the lower front teeth.