Which of the following is not a function of the tongue?

The tongue is a muscular organ that has several functions. It occupies a significant position in the oral cavity and is attached to the base of the buccal cavity by a small muscle. It acts as an organ of speech and helps in communication. Proper speech sounds are produced with the help of the tongue. The tongue acts as an organ that cleanses the mouth by removing food particles in and around the buccal cavity. It also helps the food proceed down the throat into the pharynx. The epiglottis is the organ covering the windpipe to prevent foreign substances such as food or water from entering it.