Glycogen is a polysaccharide that is the storage form of glucose in the human body. Glucose is an important biomolecule that provides energy to cells throughout the entire human body. Humans derive glucose from the foods that they eat. When they are running low on glucose, glycogen can be utilized as a glucose source.Continue Reading
In humans, glycogen is stored and produced by the hepatocytes in the liver. The main function of glycogen is as a secondary long-term energy-storage molecule. The primary energy-storage molecules are adipose cells. Glycogen is also stored in muscle cells. Muscle glycogen is converted into glucose by the muscle cells whenever muscles are overworked and tired. Glycogen from the liver is converted into glucose to be used mainly by the central nervous system, which includes the brain and spinal cord.
In the liver, blood glucose from the foods that humans eat reaches the liver via the portal vein. There, insulin stimulates the liver cells, which stimulates glycogen synthase. This enzyme stimulates the synthesis of glycogen in the liver; therefore, glycogen in the liver is formed from the food that humans eat. Muscle-cell glycogen is chemically identical to liver glycogen. However, it functions as an immediate source of glucose for muscle cells. When muscles are tired, they may convert glycogen to glucose to continue to function properly. However, liver glycogen does not convert into glucose unless the body is deprived of food.Learn more about Human Anatomy
Glycogen is a form of stored energy in the human body that is found in liver and muscle cells, as explained by Elmhurst College. It is the storage form of glucose, which is utilized in the human body whenever glucose levels are low.Full Answer >
Insulin's function is to help regulate glucose levels in the blood by transporting glucose into the cells of the human body. If a person doesn't produce enough insulin or doesn't respond well to insulin, he may have diabetes.Full Answer >
Anatomy is the study of form, while physiology is the study of function, according to Wikipedia. Anatomy is the scientific study of the structure of organisms including their systems, organs and tissues. It details the appearance and position of various parts, their material compositions and their locations and relationships with other parts. Physiology deals respectively with the functions of those anatomical parts and the chemical processes involved.Full Answer >
The consensus among biochemists is that virtually every cell in the human body can break down sugar, usually in the form of glucose, to use as energy. According to the authors of the 5th edition of "Biochemistry," the brain and the kidneys prefer to run on glucose. In fact, the brain favors glucose to such an extent that it only metabolizes other fuel sources after several days of starvation.Full Answer >