1. Storage:
* Animals store excess glucose as glycogen in the liver and muscles. This is a complex carbohydrate that can be easily broken down into glucose when needed.
2. Hormonal Trigger:
* When the body requires more glucose, hormones like glucagon and epinephrine (adrenaline) are released.
* These hormones activate enzymes within the liver and muscle cells.
3. Glycogen Breakdown:
* The enzymes break down glycogen into individual glucose molecules. This process is called glycogenolysis.
4. Glucose Release:
* Glucose is released from the liver and muscles into the bloodstream.
5. Energy Use:
* Cells throughout the body can then take up the glucose and use it for energy production through cellular respiration.
Other Ways to Release Stored Sugar:
* Gluconeogenesis: In situations of prolonged fasting or starvation, the body can produce glucose from non-carbohydrate sources, such as amino acids and glycerol, through a process called gluconeogenesis.
* Fat Breakdown: When glycogen stores are depleted, the body can also break down fat into fatty acids and glycerol. Glycerol can then be converted into glucose.
In summary:
Animals release extra stored sugar (glucose) through glycogenolysis, a process that breaks down glycogen stored in the liver and muscles. This process is regulated by hormones like glucagon and epinephrine, ensuring that the body has a readily available source of energy when needed.
