cori cycle involves

Options

A. Liver
B. Muscles
C. Liver and muscles both
D. None the these

Answer

**Step-by-Step Solution:**

1. **Understanding the Cori Cycle**: The Cori cycle, also known as the lactic acid cycle, is a metabolic pathway that involves the conversion of lactate produced in muscles back into glucose in the liver.

2. **Anaerobic Glycolysis in Muscles**: During intense exercise or when oxygen levels are low, glucose is broken down in muscles through a process called anaerobic glycolysis. This process converts glucose into pyruvate.

3. **Conversion to Lactate**: In the absence of sufficient oxygen, the pyruvate produced from glycolysis is converted into lactate (lactic acid). This lactate accumulates in the muscles.

4. **Transport to the Liver**: The lactate produced in the muscles is then transported to the liver through the bloodstream.

5. **Conversion Back to Glucose**: In the liver, lactate is converted back into glucose through a process called gluconeogenesis.

6. **Return to Muscles**: The newly formed glucose can then be sent back to the muscles to be used as an energy source, completing the cycle.

7. **Conclusion**: Therefore, the Cori cycle involves both the liver and the muscles, making the correct answer "liver and muscles both."

---