Question

Why does the repeated activation of the muscles cause fatigue?

• A. Due to the aerobic breakdown of glycogen
• B. Due to the breakdown of glucose
• C. Due to glycogen formation
• D. Due to lactic acid accumulation

Answer 1

Answer:

D. Due to lactic acid accumulation

The repeated activation of the muscles leads to the anaerobic breakdown of glycogen. This takes place due to the unavailability of oxygen. This results in the formation of lactic acid, which accumulates and causes fatigue.