The gallbladder is a small pouch that sits just under the liver. The gallbladder stores bile produced by the liver. In response to signals, the gallbladder squeezes stored bile into the small intestine through a series of tubes called ducts. Bile helps digest fats, but the gallbladder itself is not essential.The gallbladder serves as a reservoir for bile while it\’s not being used for digestion. The gallbladder\’s absorbent lining concentrates the stored bile. The bile helps the digestive process by breaking up fats. It also drains waste products from the liver into the duodenum, a part of the small intestine.The tongue is vital for chewing and swallowing food, as well as for speech. The four common tastes are sweet, sour, bitter, and salty. A fifth taste, called umami, results from tasting glutamate (present in MSG). The tongue has many nerves that help detect and transmit taste signals to the brain.