Source:http://linkedlifedata.com/resource/umls/id/C2610724
GO: The regulated release of the aqueous layer of the tear film from the lacrimal glands. Tears are the liquid product of a process of lacrimation to clean and lubricate the eyes. Tear fluid contains water, mucin, lipids, lysozyme, lactoferrin, lipocalin, lacritin, immunoglobulins, glucose, urea, sodium, and potassium. [GOC:rph]