01/11/2020 · Loed 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 of the upper jaw. Submandibular glands. Under the jaw. They have ducts that empty behind the lower front teeth. Sublingual glands. Beneath the tongue. They have ducts that empty onto the floor of the mouth.