<prompt> Von Ebner glands are mainly present in?PalateBuccal mucosaTonguePosterior pharyngeal wall  <response>: The posterior lingual serous gland also known as von Ebners glands is a minor salivary gland located in the epithelium of the trough circling the circumvallate papillae on the dorsal surface of the tongue near the terminal sulcus. Ref: Orbans oral histology and embryology, 13th edition. 