It has three main parts: The apex (or tip) of the tongue is the most anterior, and most mobile aspect of the organ. The tip is followed by the body of the tongue. The tongue is a vital organ in the human body, playing a key role in taste, speech, and digestion. This diagram provides a detailed view of the tongue ‘s structure, highlighting the base and anterior 2/3 regions, along with its anatomical features. Learn about the structure of the human tongue with a well-labelled diagram. Get detailed information about the tongue's structure and its functions. Also, find answers to frequently asked questions about the human tongue. Learn about the human tongue with a well-labelled diagram and its anatomy. Find out the functions, parts, papillae, taste buds and FAQs of the tongue.