Tongue

Tongue is a muscular organ of the digestive system that is responsible for the sense of taste. It is located on the floor of the mouth with papillae located on it's surface. Taste buds contain taste receptors and are able to recognize salty, sweet, sour, bitter and umami (savour) tastes. An average human tongue contains about 8000 taste buds. The human tongue includes eight muscles which aid with chewing food. These muscles allow the tongue to move in different directions. The human tongue is approximately 4 inches long. The human tongue is attached to the floor of the mouth by the frenulum and hyoid bone in the throat. Tongue's primary function is mastication (chewing) and its secondary function is speech, kissing, etc.