Cori cycle

The Cori cycle, discovered by Carl and Gerty Cori, is a biochemical process that explains the interconversion of sugars and starches in the animal organism. It begins with the breakdown of glycogen in the liver to glucose 1-phosphate, known as the "Cori ester." This is then converted to blood glucose. Muscle glycogen breaks down to lactic acid, providing energy for contraction. The lactic acid is then used by the liver to re-form glycogen, completing the cycle. This process is crucial for understanding how hormones like insulin and epinephrine influence carbohydrate metabolism. The tricarboxylic acid cycle, also known as the Krebs cycle, is another key stage in cellular respiration where fuel molecules are broken down to produce energy.12