How do fatigued human muscle cells repay an "oxygen debt"?

Question

Quizplus · Accepted Answer

When human muscle cells are fatigued, oxygen delivery to the cells may be insufficient, leading to the production of lactate via anaerobic glycolysis. This lactate accumulation contributes to the development of an "oxygen debt." To repay this debt, the body relies on a process called the Cori cycle, in which lactate produced by muscle cells is converted back to pyruvate in the liver, with the help of oxygen. The pyruvate can then be oxidized by the muscle cells to produce ATP, or converted to glucose, which can then be used as a source of energy by the muscle cells. Therefore, the best choice is E, "The cells convert lactate back to pyruvate."

How Do Fatigued Human Muscle Cells Repay an "Oxygen Debt