The facial nerve also innervates the sublingual and submandibular glands, which secrete saliva, as well as the lacrimal gland which produces tears, and mucous membranes of the nose, mouth, and nasopharynx.
And while all three are secreted from the lacrimal glands in your eye, only the production of emotional tears is controlled by the hypothalamus - an area of your brain that regulates emotional responses.