Cori cycle is defined as:

Cori cycle is defined as:

• A. The Cori cycle
• B. Lactate threshold
• C. OBLA
• D. Buffering

Answer: (A)

The Cori cycle is the lactate-to-glucose shuttle between exercising muscle and the liver. When muscles work hard and oxygen is limited, they convert glucose to lactate via glycolysis. This lactate is released into the blood and travels to the liver, where it is converted back into glucose through gluconeogenesis and then released back into the bloodstream to be used again by muscle. This cycle regenerates the NAD+ needed for glycolysis in the muscle and helps maintain blood glucose during intense or prolonged effort. Lactate threshold and OBLA describe points where lactate starts to accumulate in the blood, not a recycling pathway, and buffering relates to pH balance, not lactate conversion.

The Cori cycle is the lactate-to-glucose shuttle between exercising muscle and the liver. When muscles work hard and oxygen is limited, they convert glucose to lactate via glycolysis. This lactate is released into the blood and travels to the liver, where it is converted back into glucose through gluconeogenesis and then released back into the bloodstream to be used again by muscle. This cycle regenerates the NAD+ needed for glycolysis in the muscle and helps maintain blood glucose during intense or prolonged effort.

Lactate threshold and OBLA describe points where lactate starts to accumulate in the blood, not a recycling pathway, and buffering relates to pH balance, not lactate conversion.