Definition of Glycogen

1. Noun. One form in which body fuel is stored; stored primarily in the liver and broken down into glucose when needed by the body.

Exact synonyms: Animal Starch
Generic synonyms: Polyose, Polysaccharide
Derivative terms: Glycogenic

Definition of Glycogen

1. n. A white, amorphous, tasteless substance resembling starch, soluble in water to an opalescent fluid. It is found abundantly in the liver of most animals, and in small quantity in other organs and tissues, particularly in the embryo. It is quickly changed into sugar when boiled with dilute sulphuric or hydrochloric acid, and also by the action of amylolytic ferments.

Definition of Glycogen

1. Noun. (carbohydrates) A polysaccharide that is the main form of carbohydrate storage in animals; converted to glucose as needed. ¹

¹ Source:

Definition of Glycogen

1. a carbohydrate [n -S] - See also: carbohydrate

Medical Definition of Glycogen

1. Branched polymer of D glucose (mostly _(1-4) linked, but some _(1-6) at branch points). Size range very variable, up to 10exp5 glucose units. Major short term storage polymer of animal cells and is particularly abundant in the liver and to a lesser extent in muscle. In the electron microscope glycogen has a characteristic asterisk or star appearance. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Glycogen Pictures

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Lexicographical Neighbors of Glycogen

glycodeoxycholic acid
glycogen (current term)
glycogen debranching enzyme system
glycogen granule
glycogen phosphorylase
glycogen storage disease
glycogen storage disease type I
glycogen storage disease type II
glycogen storage disease type III
glycogen storage disease type IV
glycogen storage disease type V
glycogen storage disease type VI
glycogen storage disease type VIII
glycogen synthase
glycogen synthase-d phosphatase

Literary usage of Glycogen

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Text-book of physiology: For Medical Students and Physicians by William Henry Howell (1915)
"The glycogen derived from protein foods, once it is formed in the liver, has, of course, the same functions to fulfil. It is converted into sugar, ..."

2. A Text-book of Physiology for Medical Students and Physicians by William Henry Howell (1905)
"when distinct aggregations of the glycogen can not be made out, its presence in the cells is shown by the red reaction with iodin. By this simple method one ..."

3. The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1887)
"From three experiments, he concludes that rabbits supplied with ammonium carbonate, together with carbohydrate diet, produce more glycogen than those fed on ..."

4. A Text Book of Physiology by Michael Foster (1899)
"But even granting that the glycogen in a muscle may be diminished during prolonged labour, it cannot be admitted that the oxidation or other chemical change ..."

5. Proceedings of the Cambridge Philosophical Society by Cambridge Philosophical Society (1902)
"Molecular Weight of glycogen. By HENRY JACKSON, MA, Downing College. [Received 14 March 1901.] In an investigation on the chemistry of glycogen it became ..."

6. A Manual of Physiology: With Practical Exercises by George Neil Stewart (1918)
"That the muscles do not derive their glycogen by the migration of hepatic glycogen, but can themselves form it from dextrose, has been shown by injecting ..."

7. A Treatise on Chemistry by Henry Enfield Roscoe, Carl Schorlemmer (1884)
"The glycogen is then precipitated by ... then of 95 percent., and lastly with ether.8 As boiling water dissolves glycogen only slowly, it is preferable to ..."

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