What does glycogenolysis mean?
Glycogenolysis is the biochemical process in which stored glycogen is broken down, mainly to produce glucose-1-phosphate. The process is especially important in the liver, where it helps maintain blood glucose, and in skeletal muscle, where it supplies fuel during exercise. Hormonal and nervous signals can increase glycogenolysis when the body requires readily available energy. It is the reverse of glycogenesis, the process that stores glucose in the form of glycogen, and it differs from glycolysis, which breaks down glucose itself. Although the word is principally used in scientific and clinical contexts, it is also common in research on metabolism, diabetes, endurance performance, and nutrition. Understanding glycogenolysis clarifies how the body mobilizes its carbohydrate reserves and adapts to changing energy demands.
nounThe biochemical process by which glycogen is broken down, principally into glucose-1-phosphate. It occurs especially in the liver and skeletal muscles and helps make stored energy available to the body.
- The enzymatic breakdown of glycogen into smaller carbohydrate units, chiefly glucose-1-phosphate, for use by the body.
"During intense exercise, increased glycogenolysis supplies fuel to working muscles."
"Hormonal signals stimulate glycogenolysis in the liver during fasting or prolonged exercise."
"The researchers measured muscle glycogenolysis after the participants completed the endurance race."
In technical writing, an inflected plural may occasionally be used when individual instances or processes are being distinguished, but the unmarked singular is standard.
"The study measured glycogenolysis in skeletal muscle before and after exercise."
When your body needs a quick energy boost, glycogenolysis unlocks glucose from its carbohydrate reserves.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does glycogenolysis come from?
Glycogenolysis is a compound formed from glycogen and the combining form -olysis. The glyc- element comes through Greek glykys, meaning “sweet,” while -lysis derives from Greek lysis, a loosening or dissolving. Together, the elements refer to the dissolving or breakdown of glycogen, the substance in which the body stores carbohydrate.
Related word forms
How glycogenolysis is actually used
This is a specialized term used in biochemistry, endocrinology, metabolism, and exercise physiology. It is formal and technical rather than part of ordinary everyday vocabulary.
Easily confused with glycogenolysis
Glycogenesis is the synthesis of glycogen, whereas glycogenolysis is its breakdown.
Glycolysis is the pathway that breaks down glucose, whereas glycogenolysis specifically breaks down stored glycogen.