The liver stores the glycogen molecules to meet the blood's needs for glucose. When needed, the liver cells convert glycogen to glucose and release the glucose back into the blood. Liver glycogen reserves are finite and are used up within three to six hours. Muscle cells also store glucose as glycogen, but muscle glycogen can be used only for the muscle cell to do work. Muscle cells cannot release glucose back into the blood.
Fat cells have an almost unlimited storage capacity.
Liver stores both water soluble and fat soluble vitamins, while fat cells store fat soluble vitamins. Bones store and release calcium and other minerals. Disorders 91 Several preventable disorders which might be extremely uncomfortable are associated with the digestive tract. It is the process of eliminating deleterious traits and transmitting advantageous ones. As a consequence, over time, the population becomes better suited to its environment.