The Bartholin glands are small almond shaped organs located on both sides of the vaginal opening that produce essential mucus for lubrication. If a duct becomes blocked due to infection or irritation, Screaming O Original Vibrating Ring CondomDepot.com Vaginal Wetness: Types, Causes, and What is Arousal Fluid Arousal, lubrication AND the vestibular glands. The greater and lesser vestibular glands or bartholin and skene glands secrete fluid which provides lubrication. However, this is not the primary source of vaginal lubrication.