Carbohydrate Metabolism Flashcards Preview

Physiology > Carbohydrate Metabolism > Flashcards

Flashcards in Carbohydrate Metabolism Deck (34)
Loading flashcards...
31

Pentose phosphate products

Yields:
- CO2
- H atoms
- 5 carbon sugar, D-ribulose

32

Glycogenesis

Glucose is stored in liver and muscle as glycogen
- any excess glucose after a meal is converted to glycogen
- any monosaccharide, including glucose, can enter into reactions that lead to glycogen formation
= glycogen is a polymer of glucose

33

Glycogenolysis

Breakdown of stored glycogen to re-form glucose in the cells
- occurs via phosphorylation, catalyzed by enzyme phosphorylase
- splits glucose molecules away from glycogen polymer
- phosphorylase enzyme inactive at rest, so glycogen remains stored

34

What activates phosphorylase?

Epinephrine
- sympathetic nervous system response
Glucagon
- triggered by hypoglycemia